1.3 Adding and Subtracting Within 20 · Lesson 9: Addition With a TenLesson plan
Learning goals: Teacher Facing Compose and decompose teen numbers into 1 ten and some number of ones. Find the value that makes an addition equation true, where one addend is 10. Full lesson plan (warm-up, activities, synthesis, cool-down prompt) from 1.3 Adding and Subtracting Within 20, Grade 1.