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# Math Teacher Resources

The GSSM Outreach staff have curated a collection of free web resources for math classroom teachers, their students and students’ families. Many of the websites are arranged by subject area, grade level, or topic to help you find the particular resource you are searching for to create lesson plans or at-home activities.

**MULTIMEDIA****ACT Academy**

Grades K – 12. Online resource library organized by grade, subject, standard and textbook (includes videos, assessments, homework and lesson plans).

**BetterLesson**

Grades K – 12. Searchable lesson plans and resources for all content areas. Search by grade level, topic and content standard.

**Cartoons Time – YouTube Resources for Elementary Education**

Grades K – 6. A channel of animated videos addressing math, science, social studies, and language arts topics for young students. Features diverse characters in videos ranging from 3 to 6 minutes.

**cK-12**

Grades K – 12. Searchable resources (flexbooks, adaptive practice, simulations, videos, PLEX, study guides, etc.). Free resources for students, parents, teachers, schools, and districts.

**ClassHook**

Grades K – 12. ClassHook has curated thousands of educational video clips (between 1 – 5 minutes) and made them suitable for classroom use so you can share them with your students. Using ClassHook, you can save hours of time each week searching for engaging content. All you need to know is a keyword or topic, and you'll be able to find the perfect clip for your next lesson. The videos on ClassHook are age-appropriate, aligned to educational standards, and accompanied with questions and tools to facilitate discussions. The clips on ClassHook not only teach students important concepts but also make learning enjoyable and more relevant in today's digital age. Students will recognize lessons and concepts taught in the classroom in the media they watch every day. Using films and TV shows in the classroom reinforces learning in a fun way, which dramatically increases student engagement, understanding, and retention of important concepts.

**Concord Consortium**

Grades K – 12. Searchable curriculum units, activities, interactives, videos, and lessons.

**Corbettmaths**

Grades K – 12. Math videos, worksheets, 5-a-day and other resources.

**Curriki**

Grades K – 12. Library of open teaching and learning resources, educator-vetted, openly licensed, online educational materials for use, reuse, adaptation, and sharing.

**DeltaMath**

Grades 6 – 8. DeltaMath allows teachers to assign math practice content to their students. The students get immediate feedback as they complete the problems

**Edmentum**

Grades K – 12. Some free searchable resources for teachers. Other resources may be available for a limited time period.

**Edutopia**

Grades K – 12. An educators’ guide to open educational resources with information about online repositories, curriculum-sharing websites, and sources for lesson plans and activities.

**Engage NY**

Grades K – 12. Each grade level module includes units, daily lesson plans, daily quizzes, tests, teacher materials, skills practice, and answer keys. A significant number of problem sets so that teachers can provide students with plenty of opportunities to practice and apply their knowledge.

**GBH Distance Learning Center – For Educators**

Grades PreK – 16. A curated selection from extensive PBS LearningMedia and early childhood education libraries to offer you the best digital learning resources for use at home featuring assignable, self-paced, and self-contained activities to help provide students with high-quality, standards-aligned material to keep them engaged and learning. The resources cover a range of commonly-taught topics and subjects, and have been selected for their ease of use in a variety of household settings by minimizing the need for logging in, hands-on guidance, or group work.

**HippoCampus**

Grades 6 – 12. A core academic web site that delivers multimedia content--videos, animations, and simulations--on general education subjects to teachers and their students.

**Illustrative Mathematics**

Grades K – 12. A problem-based core curriculum designed to address content and practice standards. Students learn by doing math, solving problems in mathematical and real-world contexts, and constructing arguments using precise language. Teachers can shift their instruction and facilitate student learning with high-leverage routines to guide learners to understand and make connections between concepts and procedures.

**Khan Academy**

Grades K - 12. Video learning segments are followed by practice activities.

**LearnZillion**

Grades K – 8. A website that provides teachers with a free library of interactive math lessons, videos, quizzes, and assignments for students.

**Math Drills **

Grades 3 – 8. Includes over 57 thousand math worksheets that may be used to help students learn math. PDF math worksheets are available on a broad range of topics including number sense, arithmetic, pre-algebra, geometry, measurement, money concepts and much more. There are also a few interactive math features including the Sudoku and Dots math games, and the more serious math flash cards and unit converter.

**Mathalicious**

Grades 6 – 12. 144 real-world lessons from Mathalicious help middle and high school teachers address the Common Core Standards while challenging their students to think critically about the world. and also provide teachers with an opportunity to teach standards-based math through real-world topics that students care about.

**Mathematics Assessment Project**

Grades 6 – 12. This site has 100 lessons sorted by grade level with embedded formative assessment, some focused on developing math concepts, others on solving non-routine problems. There are also a set of 94 exemplar summative assessment tasks/activities that includes scoring rubrics and examples of scored student work.

**Mensa for Kids**

Grades 3 – 12. These lessons may be given to students for individual, self-guided work, or they may be taught in a classroom or homeschool setting. These plans are designed to enrich academic learning with extension for gifted children built in and include a variety of questions and extension opportunities.

**Merlot**

Grades 9 – 12. Tens of thousands of discipline-specific learning materials, learning exercises, and Content Builder webpages, together with associated comments, and bookmark collections, all intended to enhance the teaching experience of using a learning material.

**MobyMax**

Grades K – 8. MobyMax includes 115 modules covering all grades and subjects between kindergarten and eighth grade.

**National Geographic Education **

Grades K – 12. Bring National Geographic resources into your classroom with Student Experiences, Classroom Resources, Professional Development and more.

**The New York Times: Science & Math**

Grades 6 – 12. Current real-world resources for teaching science and math. The resources are organized in categories such as: Lesson of the day; Math; Guest Lesson; Science; What's Going on in this Graph?; Mentor Texts and others.

**Numberphile**

Grades 6 – 12. Numberphile is produced by video journalist Brady Haran. The stars of the show include mathematicians and other guests from around the world. Topics range from the sublime to the ridiculous… from historic discoveries to latest breakthroughs. In addition to hundreds of videos, they also have a new podcast of longer-form interviews.

**OER Commons**

Grades K – 12. A public digital library of open educational resources that you may freely use and reuse at no cost, and without needing to ask permission. From a single point of access in OER Commons, you can search, browse, and evaluate resources in OER Commons' growing collection of over 50,000 high-quality OER. Here are some curated collections to start exploring: full university courses; interactive mini-lessons and simulations; adaptations of existing open work; open textbooks; and lesson plans, worksheets and activities.

**Open Middle**

Grades PreK – 12. Leaves parts of an equation blank and asks students to fill them in to make it true. Open Middle problems encourage perseverance, game-like play, creativity, and support inquiry thinking.

**PBS Learning Media: Mathematics**

Grades PreK – 12. Bring math concepts to life through interactive games, animations and engaging media resources. Large number of multimedia resources searchable by grade level, content areas and specific topics by key word search. Available instructional guides for utilizing include Google Classroom Integration, Class Rostering Without Google Classroom, Shareable Content Folders, and Advanced Search and Browse Features.

**Powers of Ten**

Grades 6 – 12. Powers of Ten is a nine-minute video that takes us on an adventure in magnitudes. Starting at a picnic by the lakeside in Chicago, this famous film transports us to the outer edges of the universe. Every ten seconds we view the starting point from ten times farther out until our own galaxy is visible only as a speck of light among many others. Returning to Earth with breathtaking speed, we move inward- into the hand of the sleeping picnicker- with ten times more magnification every ten seconds. Our journey ends inside a proton of a carbon atom within a DNA molecule in a white blood cell.

**Problems of the Week**

Grades 7 – 12. Problems are searchable by title, grade band, or topic.

**SC Mathematics Support Documents and Resources**

Grades K – 12. The support documents are organized by grades. Each grade is then organized by possible units of study which address all of the standards for that grade. To see an overview of the units and related standards for all grades Kindergarten through Grade 5, click on the Overview page. To see the units for a particular grade and an overview for just that grade, click on the grade of interest.

**SENTeacher**

Grades K - 5. Many of the large printable colorful pages would be great for printing on cardstock and laminated for reuse: students could use dry erase markers and erase when finished.

**Shmoop Math **

Grades 6 – 12. Textbooks, learning guides, online courses, college readiness prep, and test prep balance a teen-friendly, approachable style with academically rigorous materials.

**SoftSchools **

Grades K – 12. Math games and printable, auto generated math worksheets organized by grades and topics.

**StudyJams!**

Grades 3 – 8. Math and science resources organized by content area and topic (featuring short videos, quizzes, and educational songs).

**TeachEngineering**

Grades K – 12. A digital library of STEM standards-aligned engineering curricula (units, lessons, activities, labs, challenges and informal learning “sprinkles”) for math and science educators.

**TeacherTube**

Grades K – 12. An online community for sharing instructional videos. It is a more educationally focused, safe venue for teachers, schools, and home learners. As well, it is a site where teachers can post videos designed for students to view in order to learn a concept or skill.

**Texas Instruments **

Grades 6 – 12. Texas Instruments has prepared a number of resources to support both teachers and students in remote learning.

**The Utah Middle School Math Project **

Grades 6 – 8. Middle school math resources including teacher, student and parent workbooks; PowerPoints for each lesson; plenty of additional practice problems for each lesson; answer keys for all lessons; and additional teacher resource materials. Email Maggie Cummings at cummings@math.utah.edu for access to all teacher materials.

**Which One Doesn't Belong**

Grades PreK – 12. Showcases four shapes, numbers, or graphs and asks students to describe which one doesn't belong, using math vocabulary.

**Zearn**

Grades 1 – 5. A self-paced, web-based program, which starts a typical lesson with warm-up activities to engage students. As students work through the program, they complete timed arithmetic problems, watch instructional videos on new concepts, and solve practice problems.

**INTERACTIVES, SIMULATIONS AND SOFTWARE TOOLS****Desmos**

Grades K – 12. Suite of math software tools, including graphing, scientific, four function, and matrix calculators; geometry tools; math classroom activities; a getting-to-know-you activity; and very useful starter screens.

**Geogebra**

Grades K - 12. Dynamic mathematical software (geometry, algebra spreadsheets, graphing, statistics, and calculus in one easy package) free for students and teachers. Includes an authoring tool to create interactive learning resources as web pages. This open source software can typically be installed in less than 2 minutes.

**Geometry Tool**

Desmos geometry tool. Want to learn how to use the tool? You're in the right spot! Watch the introductory video on the right, then dive deeper with the resources below.

**Legends of Learning**

Grades K – 8. Over 2000 fun, curriculum aligned, math and science games and simulations across 350+ learning objectives. Games and simulations for the classroom are specifically designed from national and state standards to support your lesson plans. The first missions are Mathematics, Life Sciences, Earth and Space Sciences, and Physical Sciences.

**PhET**

Grades 1 – 12. Interactive, research-based math and science simulations that can be run online or downloaded to your computer. The simulations are extensively tested and evaluated to ensure educational effectiveness.

**Shodor**

Grades 3 – 12. Don't be misled by the simplicity of Shodor's webpage--this is a very popular set of interactive online materials (interactive models, simulations, and educational tools) for math and science education.

**UEN K-2 Student Interactives**

Grades K – 2. Interactives: Topics include numbers and operations; algebra; geometry; number games; and data and probability.

**UEN 3-6 Student Interactives **

Grades 3 – 6. Interactives: Topics include arithmetic, algebra, geometry, fractions, measurement, patterns, money, data and estimation.

**UEN 7-12 Student Interactives **

Grades 7 – 12. Interactives: Topics include numbers and operations; algebra; geometry; number games; and data and probability.

**CALCULATORS****Add, Subtract, Multiply, Divide**

Insert up to four numbers at a time into this free calculator to solve addition, subtraction, multiplication, and division problems.

**Adding Subtracting Fractions Calculator**

Online calculator which adds or subtracts two fractions with different denominators, and explains the math behind the equation.

**Adding Subtracting Mixed Numbers Calculator**

This calculator adds and subtracts mixed numbers and fractions with different denominators, while offering an in-depth look at the math concepts behind the solution.

**Age Calculator**

Graphical age calculator that shows your chronological age in the context information about savings, U.S. Elections and more!

**Area Calculator**

Find the area of two-dimensional shapes such as circles, triangles, rhombuses, trapezoids, and more by inserting values in myriad length measurement options.

**Binary to Decimal Converter**

Input binary numbers and use this calculator to convert them to base 10 numbers, including numbers with decimal points in them.

**Binary to Hex Converter**

This calculator offers an automatic conversion of binary numbers into hexadecimal numbers.

**Compare Fractions Calculator**

Use this calculator to determine which fraction is larger in a pair of fractions with different denominators.

**Decimal to Binary Converter**

This online calculator translates base 10 numbers into binary.

**Decimal to Fraction Calculator**

Convert decimals to fractions with this online calculator. Explanations of involved math functions also available on the page.

**Decimal to Hex Converter**

Convert base 10 numbers to hexadecimal terms, or base 16 numbers.

**Decimal to Octal Converter**

Online calculator which converts decimal numbers, or base 10 numbers, into octal numbers, or base 8 numbers.

**Degrees to Radians**

Degrees to Radians converter for converting an anglular measurement from degree units to radian units and back. Also shows complementary and supplementary angles (if appropriate) for the given angle.

**Factoring Calculator**

This factoring calculator produces color animated sets of factor pairs for integers and is great for classroom demonstrations.

**Four Function Calculator**

Welcome to the Desmos four function calculator. Get started with the how-to videot, then dive deeper with the additional resources provided.

**Fraction Calculator**

Online fraction calculator for adding, subtracting, multiplying and dividing mixed and improper fractions.

**Math Fraction Reducer Calculator**

Reduce a fraction to its smallest numerator and denominator with this online calculator. The calculator also solves for greatest common factor and offers an explanation of math concepts.

**Fraction to Decimal Calculator**

Calculator for converting fractions into decimals using division. Also explore the related math concepts behind the calculations.

**Fraction to Percent Calculator**

Insert the numerator and denominator of a fraction into this calculator to solve for percentage, decimal, and simplest fraction form.

**Demos Graphing Calculator**

Welcome to the Desmos graphing calculator! Graph functions, plot data, evaluate equations, explore transformations, and much more. Get started with the how-to video, then dive deeper with the additional resources provided.

**Exponent Calculator**

Enter a base and an exponential power into this calculator and receive the result in decimal number form.

**Greatest Common Factor Calculator**

Enter two, three, or four numbers into this online tool to find the greatest common factor of the numbers.

**Hex to Decimal Converter**

Enter hexadecimal numbers (base 16 numbers with letters A-F) and this calculator converts them into base 10 numbers. The page includes explanations of hexadecimal numbers and conversions to decimal numbers.

**Long Division Calculator**

Animated long division calculator that shows the work and steps required to divide multi-digit numbers, remainders and more.

**Desmos Matrix Calculator**

Welcome to the Desmos matrix calculator. Get started with the video and learn more about this tool with the additional tips.

**Linear Equation Solver**

This online calculator solves linear equations for a single variable, and lists step-by-step how to manually solve the equation.

**Logarithm**

Calkoo application which calculates logarithms and exponents.

**Mathway**

Insert a math problem into the editor and receive a step-by-step explanation of the solution. Problem types range from basic math to calculus and statistics.

**Multiplication Calculator**

Animated multiplication calculator that shows work for longer multiplication problems. Trying to understand multi-digit multiplication? This visual tool will help!

**Online Calculator**

Large online calculator. Use for work, school or personal calculations. Commands for the online calculator you can enter not only the mouse, but with a digital computer keyboard. Site also has detailed instructions for using the calculator.

**Operations with common fractions**

Add, subtract, multiply, and divide fractions by inserting numerators and denominators. Results are automatically simplified and converted to a decimal.

**Operations with polynomials calculator**

A calculator which will add, subtract, multiply, or divide two polynomial expressions. The calculator offers the option of generating an explanation for the solution.

**Percentage Calculator**

Percentage calculator for performing fraction to percent or percent to fraction calculations, as well as fraction to decimal conversions.

**Per cent calculator**

Calculator for finding percentages. Insert two values and automatically calculate the third.

**Online Factoring Calculator**

Generates a list of all factors, prime and composite, of a number less than 10 million.

**Percent Calculator**

A calculator which solves the equation number A is what percent of number B. Enter any two of the three fields to calculate the result.

**4 Percentage Calculators**

Four calculators for solving percentage equations. Find the relationships between numbers and percentages as well as percent increase and decrease.

**Percentage Change Calculator**

Determine the percent change, the fractional change, the numerical difference, and the percentage difference between two numbers.

**Prime Factoring Calculator**

Find all the prime factors of a number with this calculator.

**Prime Factorization Calculator**

Online prime factorization calculator that produces the canonical prime factorization as well as a color factor tree. This is a projector-friendly online calculator for classroom factoring demonstrations.

**Prime Number Calculator**

This calculator checks whether or not entered numbers are prime.

**Prime Number Generator**

Online tool which generates prime numbers. Select the desired number of primes, and a numeric range within which to find them, and the tool creates a list.

**Proportion: Rule of Three**

Calculates ratio equivalents in fraction forms using the rule of three. Insert three numbers and find the fourth to complete the ratio.

**Pythagorean Theorem Calculator**

Calculates the length of one side of a triangle. Solve the value of A, B, or C by inputting the other two triangle side lengths.

**Quadratic Equation Calculator**

Solve the quadratic equation. Insert a, b, and c into this calculator and solve for x's two values.

**Roman Numeral Converter**

You will finally understand Roman Numerals! This VISUAL Roman Numeral Converter once and for all dispels the confusion Ceasar and Augustus cursed us with...

**Roman Numeral Converter**

Use this online calculator to convert Arabic numbers into Roman Numerals, or Roman Numerals into Arabic Numbers. Page has a printable Roman Numeral chart.

**Desmos Scientific Calculator**

Welcome to the Desmos scientific calculator. Get started with the how-to video, then dive deeper with the provided resources.

**Scientific Calculator**

Online scientific calculator with 10-digit keypad and functions like logarithms and trigonometric calculations. Calculate results in radians or degrees.

**Scientific Notation Calculator**

Add, subtract, multiply, and divide between two numbers in scientific notation. Calculates the solution in scientific notation and in decimal numbers.

**Scientific Notation Converter**

Convert decimals to scientific notation, or numbers in scientific notation into decimal numbers. The page also explains scientific notation and how to do conversions manually.

**Slope Calculator**

Slope calculator for graphing two points on a coordinate plane and showing the slope intercept equation. Interactively change slope, intercepts, rise over run or more for reverse calculations!

**Square Root Calculator**

Solve for the square root of a number with this calculator.

**Standard Deviation Calculator**

Online calculator for determining the standard deviation, sample variance, population variance, and mean of a set of numbers.

**Statistical Average Calculator**

This calculator determines the sum, mean, median, minimum, maximum, mode, and range of a set of numbers.

**Synthetic Division Calculator**

Online calculator which computes the synthetic division of polynomials. It also finds remainders of synthetic division and determines whether one term is a factor of the other.

**Trigonometry Calculator**

Solves for trigonometric values like sine, cosine, and tangent. Choose between degree of arc and radian.

**Volume Calculator**

Calculate the volume of three-dimensional figures like cylinders and cubes. Results available in English, metric, and nautical cubic length measurements.

**Web2.0calc**

Web 2.0 Calc provides users with several math tools. First, users can access a scientific calculator when loading the website or by clicking the “Home” button. Another tool is the Formulary that lets users input data into a formula, and the website will calculate the answer based on the given variables.

**MATH GAMES****Arcademics**

Grades K – 8. Multiplayer educational games - free math games and more for K-8 students. Arcademics combines the excitement of video games with educational content to aid learning through exciting, focused repetition that enables automaticity and fluency to be achieved quickly.

**Legends of Learning**

Grades K – 8. Over 2000 fun, curriculum aligned, math and science games and simulations across 350+ learning objectives. Games and simulations for the classroom are specifically designed from national and state standards to support your lesson plans. The first missions are Mathematics, Life Sciences, Earth and Space Sciences, and Physical Sciences.

**Math Games**

Grades PreK – 8. Online math games for students. Tools are searchable by grade and skill and many games can be used to practice multiple skills.

**Math Playground**

Grades K – 8. A fun way to practice math facts. Since then, Math Playground includes a wide variety of math topics, from problem solving and mathematical art to real world math and thinking games.

**MathNook**

Grades K – 12. This website has many math games searchable by grade level or topic and also math stations, apps, tutorials, teaching tools, worksheets, and other learning materials.

**MANIPULATIVES****Didax Virtual Manipulatives **

Grades K – 8. Online virtual manipulatives including unifix cubes, ten frames, number lines, counters, base ten blocks, 120 number board, dice, pattern blocks, algebra tiles, and others. You can also embed these manipulatives in your own online learning platform.

**Manipulatives for the Upper Elementary**

Grades 4 – 6. These 7 math activities (geometric solids, base ten blocks, geoboard, color tiles, tangrams, pattern blocks, and blocks & cubes) are available in both HTML and pdf which is useful for printing these activities.

**The Math Learning Center**

Grades K – 5. Browser-based and downloadable manipulatives, lesson plans and additional resources. The manipulatives shareable using a code or link enabling students to share their thinking with their teacher and classmates.

**Mathigon **

Grades 6 – 8. This well-organized site includes a large and varied collection of multimedia resources! *Activities* contains a large number of virtual manipulatives including Polypad (polygons, number and algebra tiles, fraction bars, Tangram, pentominoes, and much more).

**Mathsbot**

Grades K – 12. This site is well organized and has 57 virtual manipulatives and tools for teachers and students. Other resources include puzzles; lesson starters and drills; and question generators.

**National Library of Virtual Manipulatives**

Grades K – 12. A library of interactive, web-based virtual manipulatives or concept tutorials, mostly in the form of Java applets, for mathematics instruction. The manipulatives and tutorials are easily searchable by grade level and topic.

**PRINTABLES****Mathematics Blackline Masters Grades P to 9**

Grades K – 9. Over 200 blackline masters including balances, bar graphs, cubes, decimal squares, dot paper, fraction circles, fraction strips, fraction pieces, geoboards, angles, polygons, nets, grids, mats, thermometers, number strips, protractors, rulers, multiplication charts, dominoes, number match cards, number cubes, number lines, pattern blocks, place value charts, tangrams, and many others.

**Printable Manipulatives**

Download manipulatives to use in the classroom. Each manipulative is available in PDF format. Printables include fraction models, number lines, place value charts, mapping diagrams, input-output tables, coordinate planes, 2-dimensional shapes, 3-dimensional shapes, graphic organizers, algebra tiles and mat, base-ten blocks, integer counters and mat, number cube net, tangram, rongram, pattern blocks, math card war, ruler and protractor, thermometers, grid papers, dot papers, graph paper, circle graph, bar graph, histogram, stem-and-leaf plot, Venn diagram and 100s number chart.

**Printable Coordinate Plane**

The blank coordinate planes on this page include variations with labels on either the axis or the edge of the grid, as well as versions with quadrant labels. You can find full 4 quadrant coordinate planes, as well as just blank 1 quadrant coordinate planes in layouts setup for solving multiple homework problems on a single page.

**Printable Fraction Chart**

This unique rendering of equivalent fractions combines the value of the fractions positionally on the number line to create an elegant symmetry. It not only highlights fractions in their lowest, most reduced form but provides a convenient decimal equivalent for the most commonly used fractions.

**Printable Graph Paper**

Free printable graph paper, grid paper and dot paper for math problems, crafts, zentangling, landscape design, architecture or just simple doodling. All graph paper styles include inch and centimeter variations. All of these PDF files are designed to print on 8.5 x 11 inch paper.

**Printable Hundreds Chart**

Several different versions of hundreds charts.

**Printable Measurement Chart**

This measurement chart is a good reference aid for word problems involving converting volume, length or temperature units from one system to the other. Values are shown on one scale in both customary and metric systems. Great for kitchen measurement and cooking too!

**Printable Number Line**

he number line PDFs on this page include various ranges (10, 12, 15, 20, 15 and 100) in both starting from zero as well as negative ranges. A complete set of fraction number lines marked with common denominators is included in -5 to 5 ranges. There are also application specific number lines for elapsed time, temperature and money, as well as blank number lines for regular ranges and fractions.

**Printable Place Value Chart**

This page has printable place value charts. There are place value chart variations for whole numbers only, decimal numbers, and very large numbers. There are different place value chart layouts that reinforce just the place value as well as the period value.

**Printable Play Money**

These printable play money sheets can be cut up and used for classroom to teach money math, or as replacements for fake Monopoly money to make game play more realistic! PDF printables with coins and bill denominations from $1 to $100.

**Printable Probability Chart**

Probability anchor chart for word problem reference! This illustrated chart describes scenarios with coins, dice and playing cards. It includes odds for most likely and least likely outcomes.

**Printable Roman Numeral Chart **

Whether you are trying to learn how to read and write Roman numerals, trying to find a fancy way to write your birth year, or if you just need a 'cheat sheet' for quick reference, each Roman numerals chart on this page will have you working with this ancient number system in no time flat. All charts print on one page with versions for 1-10, 1-100 and 1-1000 with and without rules for Roman Numerals.

**REFERENCE MATERIALS****Discus**

Grades PreK – 12. Discus – South Carolina’s Virtual Library is the “information place” for all South Carolinians. Discus, which stands for Digital Information for South Carolina Users, provides free access to an electronic library that’s available 24/7. Discus is a collection of subscription databases with an array of resources ranging from books and magazines to maps and videos. This collection of databases provides high-quality publications in an easy to navigate format for students and teachers alike. Discus allows students to safely search for up-to-date information without sifting through advertisements and non-educational results found in search engines such as Google. In-depth information about accessing Dicus is on the Discus website.

**Encyclopedia Britannica**

Grades K – 12. Online encyclopedia – this is the full-size encyclopedia—not an edited/reduced edition!

**Fact Monster**

Grades K – 8. From the solar system to the world economy to educational games, Fact Monster has the info kids are seeking. The site is COPPA and kidSAFE-certified.

**Family-friendly Guides to South Carolina Academic Standards**

Grades K – 8. The information on this site can help you become familiar with what your child is learning at school and it includes activities to reinforce and support your child's learning, selected book titles for additional reading, and Web site addresses for extended learning. Peruse the academic standards for each grade level by clicking on the corresponding icons at the top of this webpage.

**Math Central**

Grades 6 – 12. Math Central is an internet service for mathematics students and teachers maintained by faculty and students in Mathematics and Statistics and Mathematics Education at the University of Regina. This site offers free resources for math teachers and students, including a database where users can search for the answers to math questions, information about careers, profiles of mathematicians and other resources.

**Scholarpedia **

Grades 6 – 12. A peer-reviewed open-access encyclopedia written and maintained by scholarly experts from around the world. Scholarpedia provides in-depth scholarly treatment of topics within the field of science, including mathematics; and physical, biological, behavioral, and social sciences.

**STOPWATCHES & TIMERS****Online-Stopwatch**

This tool is a web-based stopwatch teachers can use for timed exams and other assignments. The stopwatch can be increased in size to full-screen and can be set to count up or down.

**Online Stopwatch – with lap times, sound alerts & results export**

Online Stopwatch, with start alerts, lap times and sounds. Save details of your timings in a text file.

**Online Countdown Timer**

This timer will allow you to choose the beginning, ending, half done, and almost done countdown tone from a list of 17 sounds or choose no sound. The timer also has a visual representation of the elapsed time.

**Online Timer with Alarm**

Create your timers with optional alarms and start/pause/stop them simultaneously or sequentially. They are perfect for everyday activities such as taking quizzes, giving speeches, or timing experiments. There is also an option to add additional timers.