This lesson is designed to allow students to view the work of other students in the class and to explain their own work. Some teachers may be tempted to skip this step in the Unit Plan, but it is very important that students be given the opportunity to verbalize what the mathematics means that they performed in Lesson Three.
We designed these applets for NCTM's Illuminations website to help improve the teaching and learning of mathematics. They work great on your interactive whiteboard for whole class instruction. Give them a try!
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