Exploding Dots
4.5 Wild Explorations
Here are some “big question” investigations you might want to explore, or just think about. Have fun!
| EXPLORATION 1: IS THERE ANOTHER WAY TO INTERPRET THE DOTS-AND-BOXES ANSWERS?
When Sunil saw
he wrote on his paper the following lines:
He then said that the answer has to be \(165\). a) Can you explain what he is seeing and thinking? b) What would Sunil likely write on the page for \(7109-3384\)? |
| EXPLORATION 2: WHAT ABOUT NEGATIVE ANSWERS?
How might you handle and interpret this subtraction problem?
|
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