Parent guide · Grade 1 Math · Unit 2

Lesson 2.3 Making Ten

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: Add by making ten first.
You need: A ten-frame (printables pack)
Craft sticks and rubber bands
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: “0 + 9” Listen for: 9
- Ask: “4 + 1” Listen for: 5
- Ask: “8 + 0” Listen for: 8
- Ask: “4 + 0” Listen for: 4
- Ask: “3 + 6” Listen for: 9
Teach the new idea
Say this: “For 8 + 5, give 2 of the 5 to the 8 to make 10. Then 10 + 3 = 13.”
Say this: “A ten-frame shows why: the empty squares tell you how many to move.”
Say this: “Make ten: split a number to fill up a ten.”
Show how
Show: 9 + 7 = ___
Say this: “Make ten: 9 needs 1 more to make 10.”
Say this: “Split 7 into 1 and 6.”
Say this: “9 + 1 = 10”
Say this: “10 + 6 = 16”
Answer: 16
Show: Ruth gleaned 9 bundles of barley one day and 7 the next. How many bundles did she glean?
$bar model$
Say this: “Unknown: the total.”
Say this: “Bar model: two parts, 9 and 7; the whole is unknown.”
Say this: “Equation: 9 + 7 = ?”
Say this: “9 + 7 = 16”
Say this: “Answer: Ruth gleaned 16 bundles.”
Answer: 16 bundles. Ruth gleaned 16 bundles.
Practice together
Do this: Your child does these with you. Let them try first; help only after a real try.
Ask: 4 + 9 = ___
Listen for: 13
If stuck: Make ten: 9 needs 1 more to make 10.
Ask: 3 + 8 = ___
Listen for: 11
If stuck: Make ten: 8 needs 2 more to make 10.
Ask: 8 + 3 = ___
Listen for: 11
If stuck: Make ten: 8 needs 2 more to make 10.
7 more practice items on the lesson page, and on Worksheet A and Worksheet B.
Watch for
- Forgetting the leftover part after making ten.
Game: Doubles War
Each player turns a card 1–10 and says its double. The bigger double wins both cards.
Narration
Say this: “Tell me what you learned today. Show me with your hands or the counters if you like.”
Listen for: Add by making ten first.
Daily habit
Recite the doubles (1 + 1 to 10 + 10) every day, then the make-ten pairs.

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.