Instructional Activity# Connecting Area Diagrams to Calculations with Decimals

Lesson 7. Unit 5. Grade 6 Open Up Resources

Open Up Resources20 min(s)

This Instructional Activity is a part of the Lesson 7, Unit 5, Grade 6. This activity extends the previous optional activity to products of decimals. The side lengths of the area diagrams are multiplied by 0.1, but the reasoning involved is unchanged. While students can find the product using any of the previously developed pathways - i.e., multiplying the factors by powers of 0.1 or 1/10, or by using fractions-the focus here is on using partial products and connecting them to the multiplication algorithm.