Parent guide · Grade 1 Math · Unit 1

Lesson 1.4 Number Lines

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: Find numbers on a number line. Count on and back on a number line.
You need: Number cards (printables pack)
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: “Number bond: 10 is 1 and ___” Listen for: 9
- Ask: “Number bond: 10 is 5 and ___” Listen for: 5
- Ask: “Number bond: 10 is 2 and ___” Listen for: 8
- Ask: “Number bond: 10 is 3 and ___” Listen for: 7
- Ask: “Number bond: 10 is 7 and ___” Listen for: 3
Teach the new idea
Say this: “A number line puts numbers in order with equal spaces between them. Numbers get bigger to the right.”
Say this: “Adding moves right; subtracting moves left.”
Say this: “Number line: a line with numbers in order, equally spaced.”
Show how
Show: Fill in the missing number: 9, ___, 7, 6, 5
Say this: “The numbers go down by 1 each time.”
Say this: “9 − 1 = 8”
Answer: 8
Show: Fill in the missing number: 3, ___, 7, 9, 11
Say this: “The numbers go up by 2 each time.”
Say this: “3 + 2 = 5”
Answer: 5
Practice together
Do this: Your child does these with you. Let them try first; help only after a real try.
Ask: What number comes just before 11?
Listen for: 10
If stuck: 11 − 1 = 10
Ask: What number comes just after 7?
Listen for: 8
If stuck: 7 + 1 = 8
Ask: What number comes just after 5?
Listen for: 6
If stuck: 5 + 1 = 6
7 more practice items on the lesson page, and on Worksheet A and Worksheet B.
Watch for
- Counting the starting mark as a jump.
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: Find numbers on a number line.; Count on and back on a number line.
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.