Counting 3, 6, 9 to reach 21? Good news.

What the video says

1. Counting 3, 6, 9 to reach 21? Good news.
2. Counting up to 3 × 7 means your child understands multiplication.
3. It is groups, added up.
4. Meaning cannot be installed later. Speed can.
5. There are three stages: counting, deriving, recall.
6. Drilling tables tries to skip the middle one.
7. Deriving: 3 × 7 is 3 × 5, which is 15, plus 3 × 2, which is 6.
8. 15 and 6 make 21.
9. Build that bridge, and recall arrives on its own.

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