In this fully scripted 2 segment, 2 hour lesson, 1st grade students will subtract multiples of 10 mentally using a variety of methods including a collaborative game, explain the strategy they chose to subtract 10 and how place value can help subtract multiples of 10 quickly.
In Segment 1, student will practice subtracting multiples of 10 using number grids, ten blocks, drawings or ten frames. Using a gradual release model, students will be guided through understanding the value of using 10's when adding or subtracting.
In Segment 2, students will play a game, "Take Away 10" to demonstrate their understanding of mental math using 10's.
This lesson includes an exit slip that will provide valuable instructional information to you regarding your students understanding of adding and subtracting using 10's.