Being able to scale comfortably is important for both whole and decimal numbers. And just as there are more sophisticated ways to handle scaling with whole numbers, we can also be more sophisticated scaling decimals! In this episode Pam and Kim describe how we can help students become comfortable with decimal multiplication using their understanding of whole number multiplication and then scaling. Talking Points:
Reflecting on the more sophisticated strategy from Ep 106
Applying knowledge of whole number multiplication to decimals
It's more about reasoning than shifting the decimal
Reasoning in small steps builds understanding vs. just counting the decimals
Reasonableness comes from keeping kids in reasoning land
