Model subtraction stories within 5 using real objects, taking some away and counting what is left.
Subtraction means taking some away and seeing what is left. If you have 5 cookies and eat 2, count what remains: 1, 2, 3. Now you have 3 cookies.
We write this as 5 - 2 = 3. The minus sign means take away. Count what is left, not what you took away.
Mastery looks like: They act out take-away stories within 5 with objects and correctly count what remains.
Common stumbles: Counting the objects that were removed instead of the ones left; starting the countdown from the wrong number.
See it visually
Interactive, spoken-aloud tools that show this idea in motion.