Lesson 12 of 29
Chapter 3•interactive•20 min10 XP
Count Images
Introduction
Use pictures to visualize subtraction — cross out objects and count what remains.
1
Visual Subtraction
Looking at a group of images and crossing some out is the most concrete way to understand subtraction. Count all the objects, cross out the number being subtracted, then count the remaining objects.
Quick practice
Using a sample question until this lesson includes practice data. XP sync rolls out with account progress (Phase 4).
0 / 1 answered (demo)
Quick warm-up: what is 4 + 3?
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