Joel Martinez

25 is a puzzle where you have to fill twenty-five boxes arranged in a square array with the numbers 1 to 25 (in order) following three rules. Rule 1- …

Show your family and friends how you solve basic algebraic equations as if they were a puzzle, using tapping and dragging! touchyMath is for visual le …

Learning to use fractions? Step by step instructions for adding, subtracting, multiplying, and dividing two fractions. Designed to be a homework and s …

Simple count down utility. You supply a time, and it will count down the number of hours, minutes, and seconds until that time comes next, whether it' …

The Khan Academy is a not-for-profit 501(c)(3) with the mission of providing a world-class education to anyone, anywhere. This (unofficial) applicatio …