Khan Academy
Khan Academy: Plotting Inequalities
Create number line graphs of inequalities. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Math Planet
Math Planet: Calculating the Circumference of a Circle
Gain an understanding of how to find the diameter of a circle by viewing an example and a video lesson. [1:01]
Math Planet
Math Planet: Solving Inequalities
Gain an understanding of how to solve inequalities by viewing examples and a video lesson.