Lesson 9.1 Numbers to 20

Steps

1. Warm-up

   Do this: Ask these out loud. Your child answers out loud; no paper needed.

   • Ask: “5 + 1” Listen for: 6
   • Ask: “2 + 5” Listen for: 7
   • Ask: “3 + 4” Listen for: 7
   • Ask: “3 + 0” Listen for: 3
   • Ask: “4 + 2” Listen for: 6
2. Teach the new idea

   Say this: “Teen numbers are ten and some more.”

   Say this: “Compare by counting or by looking at the ones.”

3. Show how

   Show: Write <, > or = : 10 ___ 12

   Say this: “10 is less than 12.”

   Say this: “10 < 12”

   Answer: 10 < 12

   Show: Fill in the missing number: 2, ___, 4, 5, 6

   Say this: “The numbers go up by 1 each time.”

   Say this: “2 + 1 = 3”

   Answer: 3

4. 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.

   

   Listen for: 5

   If stuck: Touch each one and count: 1, 2, 3, 4, 5.

   Ask: How many? Count and write the number.

   

   Listen for: 14

   If stuck: Count the full tens first, then the ones: 1 ten and 4 more make 14.

   Ask: How many? Count and write the number.

   

   Listen for: 8

   If stuck: Touch each one and count: 1, 2, 3, … 8.

   7 more practice items on the lesson page, and on Worksheet A and Worksheet B.

5. Watch for
   • Reversing teen digits.
6. Game: Math Bingo

   Make a 3 × 3 grid of numbers 0–10. Call out problems like “3 + 4” or “one less than 6.” Your child covers the answers. Three in a row wins.

7. Narration

   Say this: “Tell me what you learned today. Show me with your hands or the counters if you like.”

   Listen for: Review counting, writing and comparing to 20.

8. Scripture

   To every thing there is a season, and a time to every purpose under the heaven:

   A school year has its seasons too. Looking back helps us give thanks for what we have learned.

9. Daily habit

   Mix all the counting chants: by ones to 100, by tens, by fives, and back from 20.

Spread over the week

5 sessions of 15–20 minutes. Stop while it is still going well.

1. Session 1. Warm-up, then teach the new idea (steps 1 and 2).
2. Session 2. Warm-up again, then show how with the examples.
3. Session 3. Practice together, then play the game.
4. Session 4. More practice on the worksheet, and the daily habit.
5. Session 5. Quick check: narration and a few practice items. Move on when it is mostly right.