In previous units, students counted a collection of up to 120 objects and wrote and read numbers in that range. Students recognized 10 tens as 100, but haven’t been introduced to the unit of a hundred.

In this lesson, students revisit counting large groups of objects or images and represent their count in different ways. With both objects and images, students consider how organizing into groups of ten is helpful.

If students need additional support with the concepts in this lesson, refer back to Unit 6, Section B in the curriculum materials.

As students worked today, whose ideas were heard, valued, and accepted? How can you make adjustments for tomorrow to ensure each student’s ideas are a part of the collective learning?