In this lesson, students apply what they learned about interpreting and representing multiplicative comparison situations to problems in context. The numbers students encounter here are larger, encouraging them to transition from discrete diagrams to more-abstract tape diagrams in which each section is labeled to represent a quantity (MP2).
Students continue to write equations with symbols representing the unknown and to describe the meaning of their equations in the context of the word problems. In both activities, they extend their understanding of multiplicative comparison and tape diagrams to solve a two-step problem.
- Multiply or divide to solve one- and two-step problems involving multiplicative comparison.
- Let’s solve multiplicative comparison word problems.
|Activity 1||20 min|
|Activity 2||15 min|
|Lesson Synthesis||10 min|
Teacher Reflection Questions
- How Close? (1–5), Stage 6: Multiply to 3,000 (Addressing)
- Five in a Row: Multiplication (3–5), Stage 2: Factors 1–9 (Supporting)