Parent guide · Grade 1 Math · Unit 1

Lesson 1.2 Number Bonds to 10

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: Know every pair that makes 10. Find a missing part.
You need: Number cards (printables pack)
Pencil and crayons
Print: Worksheet A · Worksheet B · the lesson page (it also has a short video (3:01))

Steps

Warm-up
Do this: Ask these out loud. Your child answers out loud; no paper needed.
- Ask: “Number bond: 10 is 1 and ___” Listen for: 9
- Ask: “Number bond: 10 is 5 and ___” Listen for: 5
- Ask: “Number bond: 10 is 7 and ___” Listen for: 3
- Ask: “Number bond: 10 is 3 and ___” Listen for: 7
- Ask: “Number bond: 10 is 6 and ___” Listen for: 4
Teach the new idea
Say this: “Ten can be split into 1 and 9, 2 and 8, 3 and 7, 4 and 6, 5 and 5 (and 0 and 10).”
Say this: “Knowing the make-ten pairs by heart makes adding and subtracting much faster.”
Say this: “Number bond: a whole and its two parts.”
Say this: “Whole: the total amount.”
Show how
Show: Number bond: 10 is 10 and ___.
$bar model$
Say this: “10 + ___ = 10”
Say this: “10 + 0 = 10”
Answer: 0
Show: Find the missing number: 2 + ___ = 4
Say this: “Think: what goes with 2 to make 4?”
Say this: “4 − 2 = 2”
Say this: “Check: 2 + 2 = 4”
Answer: 2
Practice together
Do this: Your child does these with you. Let them try first; help only after a real try.
Ask: Number bond: 5 is 4 and ___.
$bar model$
Listen for: 1
If stuck: 4 + ___ = 5
Ask: Number bond: 8 is 4 and ___.
$bar model$
Listen for: 4
If stuck: 4 + ___ = 8
Ask: Number bond: 5 is 2 and ___.
$bar model$
Listen for: 3
If stuck: 2 + ___ = 5
7 more practice items on the lesson page, and on Worksheet A and Worksheet B.
Watch for
- Counting on fingers every time. Practise the pairs until they are instant.
Game: Bond Snap
Deal number cards 0–10. Turn one card each; if the two cards make 10, the first to say “Ten!” keeps them.
Narration
Say this: “Tell me what you learned today. Show me with your hands or the counters if you like.”
Listen for: Know every pair that makes 10.; Find a missing part.
Daily habit
Count to 120 by ones and back from 30. Say the make-ten pairs quickly.

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.