Parent guide · Grade 3 Math · Unit 4
Lesson 4.1 Sharing and Grouping
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 25–30 minutes
- Goal
- Divide by sharing and by grouping.
- You need
- Counters (dried beans, buttons or pebbles)
- A few cups
- Pencil and crayons
- A King James Bible
- Worksheet A · Worksheet B · the lesson page (it also has a short video (9:58))
Steps
Do this: Ask these out loud. Your child answers out loud; no paper needed.
- Ask: “1 × 10” Listen for: 10
- Ask: “10 × 4” Listen for: 40
- Ask: “3 × 5” Listen for: 15
- Ask: “4 × 5” Listen for: 20
Say this: “12 ÷ 3 can mean share 12 among 3 (4 each) or make groups of 3 (4 groups).”
Say this: “Either way the quotient is the same.”
Say this: “Divide: split into equal groups.”
Say this: “Quotient: the answer to a division.”
Show: 14 ÷ 2 = ___
Say this: “Share 14 into 2 equal groups.”
Say this: “Each group gets 7, because 2 × 7 = 14.”
Answer: 7
Show: A weaver has 9 feet of cloth. She cuts it into pieces 3 feet long. How many pieces does she get?
Say this: “Unknown: the size of each group.”
Say this: “Bar model: the whole is 9, cut into 3 equal parts.”
Say this: “Equation: 9 ÷ 3 = ?”
Say this: “9 ÷ 3 = 3”
Say this: “Answer: She gets 3 pieces.”
Answer: 3 pieces. She gets 3 pieces.
Do this: Your child does these with you. Let them try first; help only after a real try.
Ask: 10 ÷ 5 = ___
Listen for: 2
If stuck: Share 10 into 5 equal groups.
Ask: 10 ÷ 2 = ___
Listen for: 5
If stuck: Share 10 into 2 equal groups.
Ask: 9 ÷ 3 = ___
Listen for: 3
If stuck: Share 9 into 3 equal groups.
7 more practice items on the lesson page, and on Worksheet A and Worksheet B.
- Answering with the number of groups when the question asks how many in each.
Count out 12 to 40 beans and a number of cups. Share the beans equally. Say the division fact and the matching multiplication fact.
Say this: “Tell me what you learned today. Show me with your hands or the counters if you like.”
Listen for: Divide by sharing and by grouping.
And they sat down in ranks, by hundreds, and by fifties.
Before feeding the five thousand, Jesus had the crowd sit in groups. Division sorts a large number into equal groups.
Say the multiplication facts of 2, 3, 4, 5 and 10 as division facts.
Spread over the week
5 sessions of 25–30 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.