Parent guide · Kindergarten Math · Unit 6

Lesson 6.3 16 to 20

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 15–20 minutes
Goal: Read, write and count 16 to 20. Know that 20 is two tens.
You need: A ten-frame (printables pack)
Craft sticks and rubber bands
Pencil and crayons
Print: Worksheet A · Worksheet B · the lesson page (it also has a short video (2:40))

Steps

Warm-up
Do this: Ask these out loud. Your child answers out loud; no paper needed.
- Ask: “6 + 3” Listen for: 9
- Ask: “3 + 7” Listen for: 10
- Ask: “4 + 1” Listen for: 5
- Ask: “8 + 1” Listen for: 9
- Ask: “2 + 5” Listen for: 7
Teach the new idea
Say this: “Sixteen to nineteen are ten and 6, 7, 8 or 9. Twenty is two full tens.”
Say this: “Two full ten-frames make 20.”
Say this: “Twenty: two tens, written 20.”
Show how
Show: How many? Count and write the number.
$ten-frame showing 19$
Say this: “Count the full tens first, then the ones: 1 ten and 9 more make 19.”
Answer: 19
Show: 1 tens and 4 ones make what number?
Say this: “1 tens = 10”
Say this: “10 + 4 = 14”
Answer: 14
Practice together
Do this: Your child does these with you. Let them try first; help only after a real try.
Ask: How many? Count and write the number.
$ten-frame showing 18$
Listen for: 18
If stuck: Count the full tens first, then the ones: 1 ten and 8 more make 18.
Ask: How many? Count and write the number.
$ten-frame showing 16$
Listen for: 16
If stuck: Count the full tens first, then the ones: 1 ten and 6 more make 16.
Ask: How many? Count and write the number.
$ten-frame showing 17$
Listen for: 17
If stuck: Count the full tens first, then the ones: 1 ten and 7 more make 17.
7 more practice items on the lesson page, and on Worksheet A and Worksheet B.
Watch for
- Forgetting 20 has two tens.
Game: Ten and Some More
Your child builds a teen number with a bundle of 10 sticks and loose sticks, then says “ten and four make fourteen.”
Narration
Say this: “Tell me what you learned today. Show me with your hands or the counters if you like.”
Listen for: Read, write and count 16 to 20.; Know that 20 is two tens.
Daily habit
Count to 30 aloud, then count back from 20.

Spread over the week

5 sessions of 15–20 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.