I can use estimation, mental math, or rounding to decide if an addition or subtraction answer makes sense.
Standard cap: 4 - Evaluate and critique estimation strategies.
Subskills what students must be able to do
- 1I can estimate what an answer should be close to.
- 2I can compare my estimate to my exact answer.
- 3I can explain why an answer is reasonable or unreasonable.
Proficiency Scale & ⚓️ Tasks
1 → 4 proficiency scale
“About how much is 4,892 + 3,117?”
“You calculated 4,892 + 3,117 = 8,009. Compare it to your estimate. Does it seem possible?”
“Use estimation or mental math to decide whether 83,104 − 27,891 = 55,213 is reasonable. Explain.”
“Two students use different estimation strategies. Decide which strategy is more useful for checking this answer and defend your choice.”
Pre-Test
Check what students already know2Extra Test Materials (1)
Teach
Lessons and videos that introduce the skill3Engage NY Lesson (3)
Lesson 12 — Multi-step word problems with tape diagrams using rounding
Grade 4 · Module 1 · Topic D · Lesson 12
Lesson 16 — Two-step word problems
Grade 4 · Module 1 · Topic E · Lesson 16
Lesson 18 — Two-step word problems and rounding
Grade 4 · Module 1 · Topic F · Lesson 18
Snorkl / Spiral Checks
Quick checks along the way3Post-Test
End-of-target tests and extra materials1GoMath / CP
Curriculum lessons and their exit tickets10CP Exit Ticket (5)
CP Lesson (5)
CP Lesson 1.6
GoMath chapter 1.6
CP Lesson 1.7
GoMath chapter 1.7
CP Lesson 1.8
GoMath chapter 1.8
CP Lesson 3.2
GoMath chapter 3.2
CP Lesson 4.5
GoMath chapter 4.5