Fractions - basics - 3rd part
Think what part of the circle is colored! What fraction is the answer? Check your answer by clicking the "Colored" button. Then click the "Refresh" sign in the right-upper angle of the applet, and repeat exercise.
LCM and GCD
Largest semicircle inscribed in square
Shawver Period 6 Justin McIntyre
Challenge 1a. Reflection in the line x = 1
Linear Programming or Linear Optimization