Second graders use a number line to practice subtraction.  In this subtraction lesson, 2nd graders use a number line to count backwards.  Students participate in mad math activities and solve problems.

Students explore algebraic relationships using the coins in their "pocket." Interactive games that demonstrate the use of estimation in algebraic problem solving help them build a framework for understanding word problems in a way that...

Identify the fraction of a whole that is shaded. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.