Materials Needed: 10 one peso coin, 10 five-peso coin, 10 ten-peso coin, pen and paper Instructions 1. This activity can be played individually or by pair, 2. Stack 5 ten-peso and count your money. Write a number sentence (multiplication) for this in the table below. 3. Stack 10 five-peso coins and count the money again. Also write a number sentence for this. 4. Observe your results in steps 2 and 3. Stack Number Sentence 5. Stack 5 one-peso coins and then 5 five-peso coins and add them. How much do you have? Write a number sentence for this. 6. Stack the remaining five-peso coins then add the remaining one-peso coins. Write a number sentence for this. 7. Observe your results in steps 5 and 6.,​