Students will learn what it means to represent a number in different ways and will begin to explore decomposing numbers. Included is a detailed lesson plan, link to an online game, worksheet, center ideas, and a "Ways to Make 10" chart.

Find an angle's measure when given the measures of its parts. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

The students will make the connection between 2-D and 3-D shapes using modeling clay and geometric solids and participate in an interactive web activity. Students will make predictions about what 2-D shape they think will be made when...