Big Idea:What student doesn't have a messy room? The messy room in this lesson familiarizes students with a ten frame. It organizes items for counting and allows them to build important understanding for skip counting by 5s and 10s.
Big Idea:Changing the configuration of items often confuses young learners. They may think the number of item changes. This lesson will help students understand that a set has the same number of items regardless of the configuration.