MathLibs® – Free for Over a Decade!

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Sorry, after almost 2 decades of offering Mathlibs® for free, Adobe discontinued the Flash Player, so now it’s not possible to view these lessons and games on the web any more. 

I’m working on adding more non-Flash Mathlibs®, and you can see the first question set here!

If you have a PC, you can purchase the .exe version of Mathlibs® for $9.99 here. 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.                           

~ Jessika Jake

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: