Summary
A full lesson on subtraction: Daniel explains taking away, counting back, and finding the difference. Uses visual models to show subtraction within 20, building toward two-digit subtraction. Good for a whole-group mini-lesson or independent review.
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Teaching resources
Discussion questions
Discussion
Subtraction means taking away from a group to find what's left.
- What does the minus sign (−) mean?
- If you have 9 crayons and give away 4, how many do you have?
- How is subtraction the opposite of addition?
Quick work-a-long
Vocabulary: subtract, minus, difference, take away, number sentence.
Try it: Start with 10 counters, take some away, and write the subtraction sentence. Swap with a partner.