Parent guide · Grade 2 Math · Unit 9

Lesson 9.4 End-of-Year Check

Written for the parent. Read the Say this lines aloud as they are, or in your own words. Answers for you are marked Listen for.

At a glance

Time: 5 sessions of 20–25 minutes
Goal: Show what you have learned this year.
You need: A few real coins
Pencil and crayons
Print: Worksheet A · Worksheet B · the lesson page

Steps

Warm-up
Do this: Ask these out loud. Your child answers out loud; no paper needed.
- Ask: “5 + 3” Listen for: 8
- Ask: “7 + 7” Listen for: 14
- Ask: “5 + 4” Listen for: 9
- Ask: “9 + 3” Listen for: 12
Teach the new idea
Say this: “Show your work and check each answer.”
Say this: “Draw a bar model when a story is tricky.”
Show how
Show: 280 + 221 = ___
Say this: “Ones: 0 + 1 = 1. Write 1.”
Say this: “Tens: 8 + 2 = 10. Write 0 and regroup 1 to the hundreds.”
Say this: “Hundreds: 1 + 2 + 2 = 5. Write 5.”
Say this: “280 + 221 = 501”
Answer: 501
Show: There are 93 ducks on the pond and 84 more fly in. How many ducks are on the pond now?
$bar model$
Say this: “Unknown: the total.”
Say this: “Bar model: two parts, 93 and 84; the whole is unknown.”
Say this: “Equation: 93 + 84 = ?”
Say this: “93 + 84 = 177”
Say this: “Answer: There are 177 ducks now.”
Answer: 177 ducks. There are 177 ducks now.
Practice together
Do this: Your child does these with you. Let them try first; help only after a real try.
Ask: Write 643 in expanded form.
Listen for: 600 + 40 + 3
If stuck: Write each digit times its place value: 600 + 40 + 3
Ask: Write 101 in expanded form.
Listen for: 100 + 1
If stuck: Write each digit times its place value: 100 + 1
Ask: 245 + 343 = ___
Listen for: 588
If stuck: Ones: 5 + 3 = 8. Write 8.
7 more practice items on the lesson page, and on Worksheet A and Worksheet B.
Watch for
- Rushing.
Game: Math Relay
Write ten problems on cards around the house. Your child runs to each card, solves it and brings it back. Time the round; try to beat it.
Narration
Say this: “Tell me what you learned today. Show me with your hands or the counters if you like.”
Listen for: Show what you have learned this year.
Daily habit
Mixed fact drill daily. Count by 5s, 10s, 25s and 100s.

Spread over the week

5 sessions of 20–25 minutes. Stop while it is still going well.

Session 1. Warm-up, then teach the new idea (steps 1 and 2).
Session 2. Warm-up again, then show how with the examples.
Session 3. Practice together, then play the game.
Session 4. More practice on the worksheet, and the daily habit.
Session 5. Quick check: narration and a few practice items. Move on when it is mostly right.