Lesson Plan

Decompose a multi-digit multiplication problem into partial products using place value (e.g., 3 x 423 = 3 x 400 + 3 x 20 + 3 x 3)

Use an area model (rectangle diagram) to organize and visualize the partial products in a multiplication problem

Multiply a whole number of up to four digits by a one-digit whole number using strategies based on place value

Multiply two two-digit numbers using an area model and partial products

Illustrate and explain why a multiplication strategy works by connecting the visual model to the written equations

4.NBT.B.5

4.NBT.B.5: Multiply a whole number of up to four digits by a one-digit whole number, and multiply two two-digit numbers, using strategies based on place value and the properties of operations. Illustrate and explain the calculation by using equations, rectangular arrays, and/or area models.