Multiply by Nine- Finger Mat
Your students understand the concept of multiplication. Now they just need to gain fluency with their math facts. Luckily, the nine times table is SUPER EASY!
Nine has an important location on the number line. It is the number just before ten ~ and ten is the the base of our number system. This is why there are some fantastic numerical patterns in multiples of nine, that do not happen with multiples of any other number.
For example, multiples of nine have a digit sum of nine. Since we have ten fingers, we can use one of them to represent the multiplier and the rest will naturally add up to nine.
Your students will:
- gain fluency with the nine times table.
- discover some way-cool numerical patterns.
- learn how to calculate digit sums.
- explore using digit sums to check accuracy when multiplying by nine.
- Pick up an easy way to multiply single digits by nine.
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Isabelle
Isabelle Hoag M. Ed.
