MathLibs.org® – Free for Over 2 Decades!

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Mathlibs.org® has been helping students have fun and get over their fears of math for almost a quarter of a century now! We’re working on adding more non-Flash Mathlibs™, and you can see the first, colorful and interactive 👉question set here👈.

We’ve also created some simple 5 question Choose Your Own Multiplication Tables Adventures. To try one, click here:
https://kidcourses.com/official-math-libs/

Also…….

If you have a PC, you can purchase the .exe version of Mathlibs.org® for $9.99 here. You can also purchase simple PDFs of Mathlibs from our store.  It breaks my heart that Flash is gone. I hope to be able to load more free math games onto this site in the future. Please visit the shop for downloadable educational course materials in the field of mathematics for students from elementary through junior high, and downloadable printable material in the field of mathematics for grades 0-8.

~ Jessika Jake

We are so sorry!! After more than 2 decades of offering Mathlibs™ for free, Adobe discontinued the Flash Player, so now it’s not possible to view these lessons and games (listed below) on the web any more. Please select an option from above! We are trying to restore the in-page Flash experience (hence we did not delete the games).

We are working to bring back (the equivalent) of all the loads and loads of free content. Until we do, a lot of what you see below will lead you no where. 🙁 🙁

Make your own silly math questions! Have fun while reviewing 4th Grade Math for the state tests. (Flash® is required.) You can also view MathLibs™ FULL SCREEN (ad free) in a new window and try other fun math content below!

It’s easy to explore:

• Click Math Libs above to choose between Multiplication MathLibs™ (Grade 3) and Grade 4 MathLibs™ sets. You can then generate your own silly math questions!
• Click Lessons above to click through fun animated Grade 4 math lessons in: Numbers, Patterns, Measurement, Geometry, Graphing, and Probability. If you prefer to hear audio with the lessons, click here (also ad free).

More fun math on KidCourses.com:
*Sorry, most of these will fail because Flash was discontinued in 2021.

Colorful PDF of the Grade 4 Lesson 1 concepts (whole numbers, fractions, decimals, rounding, expanded notation, multiples, factors, what it means to be prime, the Associative and Commutative Properties, how we compare numbers and long division)

Rapid Fire Quiz, Lesson 1 (whole numbers, fractions, decimals, rounding, expanded notation, multiples, factors, what it means to be prime, the Associative and Commutative Properties, how we compare numbers and long division)

Rapid Fire Quiz, Lesson 2 (using symbols instead of numbers, patterns, ratios, and percents)

Rapid Fire Quiz, Lesson 3 (length, perimeter, area, volume, time, temperature, and estimation strategies)

Rapid Fire Quiz, Lesson 4 (degrees, types of angles, parallel and perpendicular lines, shapes and solids, congruent figures, symmetry, and transformations)

Rapid Fire Quiz, Lesson 5 (the coordinate grid, x-axis, y-axis, how to plot and find points, and how to use a grid to measure distances)

Rapid Fire Quiz, Lesson 6 (charts, graphs, random sampling, probability, combinations, minimums, maximums, range, mean, median, and mode)

5 Questions (with answer explanations) on Lesson 1, Numeration & Computation

5 Questions (with answer explanations) on Lesson 2, Patterns, Relationships, and Algebraic Thinking

5 Questions (with answer explanations) on Lesson 3, Measurement

5 Questions (with answer explanations) on Lesson 4, Geometry

5 Questions (with answer explanations) on Lesson 5, Coordinate Geometry

5 Questions (with answer explanations) on Lesson 6, Probability and Statistics

Try our Grade 4 Math Review with audio

In addition to playing our free Math Libs™, check out more fun math from kidCourses: