I can distinguish multiplicative comparisons from additive comparisons and solve multiplicative comparison word problems using models and equations.
Standard cap: 4 - Solve comparisons with the unknown in unfamiliar positions.
Subskills what students must be able to do
- 1I can tell whether a comparison is additive (“more than”) or multiplicative (“times as many”).
- 2I can draw a model and write an equation with a symbol for the unknown.
- 3I can solve the comparison and explain my answer.
Proficiency Scale & ⚓️ Tasks
1 → 4 proficiency scale
“Which statement is multiplicative: ‘Mia has 3 more stickers than Sam’ or ‘Mia has 3 times as many stickers as Sam’? Explain how you know.”
“Draw a model and write an equation for: Mia has 3 times as many stickers as Sam, who has 8.”
“A large dog weighs 8 times as much as a small dog. The large dog weighs 88 lb. Find the small dog’s weight using a model or equation and explain.”
“Create and solve two different stories for 6 × n = 42 where the unknown represents a different part of the comparison.”
Pre-Test
Check what students already know3Teach
Lessons and videos that introduce the skill3Engage NY Lesson (3)
Lesson 17 — Compare word problems modeled with tape diagrams
Grade 4 · Module 1 · Topic F · Lesson 17
Lesson 12 — Two-step word problems
Grade 4 · Module 3 · Topic D · Lesson 12
Lesson 2 — Multiplicative comparison word problems: area and perimeter formulas
Grade 4 · Module 3 · Topic A · Lesson 2