Math lesson plan · Kindergarten (Reception and Year 1 in England) · 45 minutes
Make 10 (number bonds)
Addition and subtraction
CCSS K.OA.A.3CCSS K.OA.A.4England: Reception NumberEngland: Y1 Addition and subtraction
Objective and success criteria
Students will: Make 10 (number bonds).
- I can answer questions on today's skill on my own, without help.
- I can explain each step and say why it works.
- I can check my answer and spot a mistake.
Before and after
Needs first: Add within 10
Leads to: Number bonds within 5 and 10; Add within 20; Add by making a ten first
Materials: Base-ten blocks, Number lines, Hundred square, Mini whiteboards and pens, Printed student sheet (below).
Warm-up · 5 min
- Quick retrieval from earlier learning (Add within 10). Students answer on mini whiteboards.
- Show answers together and note who needs support in the main task.
- Luis has 4 beads. A friend gives Luis 4 more. How many beads does Luis have now? → 8Prompt: Are we putting groups together or taking away?
- Mateo has 1 cookies. A friend gives Mateo 4 more. How many cookies does Mateo have now? → 5Prompt: Are we putting groups together or taking away?
- Nia collected 5 marbles in the morning and 5 in the afternoon. How many is that altogether? → 10Prompt: Are we putting groups together or taking away?
Hook · 5 min
- Give a real shopping total or a score difference and ask for a quick estimate first.
- Share the objective: Make 10 (number bonds). Read the success criteria together.
I do: model it · 10 min
- Work through the example out loud, saying why you do each step, not just what you do.
- Example: Grace has 10 pencils. 1 are in the box. How many are not in the box?
- Step 1: 10 − 1 = 9
- Answer: 9
- Pause after each step and ask a student to say what comes next.
We do: guided practice · 10 min
- Do these together. Students try each step on whiteboards before you reveal it.
- Use the hints as prompts rather than giving the answer.
- Ines has 10 pencils. 3 are in the box. How many are not in the box? → 7Prompt: The two groups together make 10.
- Ines has 10 pencils. 1 are in the box. How many are not in the box? → 9Prompt: The two groups together make 10.
You do: independent practice · 10 min
- Students work on the student sheet. Circulate and check the first two answers of every student early.
- Students who finish: write a question of their own for a partner, with the answer.
The 8 questions are on the student sheet below, with answers in the key.
Exit ticket · 5 min
- Two questions on their own. Sort answers into got it / nearly / not yet to plan the next lesson.
- Nia has 10 pencils. 2 are in the box. How many are not in the box? → 8Prompt: The two groups together make 10.
- Amara has 10 pencils. 1 are in the box. How many are not in the box? → 9Prompt: The two groups together make 10.
Watch out for
- Subtracting the smaller digit from the bigger one in every column (52 − 17 = 45).
- Forgetting to add the regrouped (carried) ten.
Support and stretch
Support
- Review first: Add within 10.
- Use concrete materials: base-ten blocks.
- Give the first step of each question, or a partly worked example to finish.
- Pair with a confident partner for the guided practice.
Stretch
- Move on to: Number bonds within 5 and 10; Add within 20; Add by making a ten first.
- Explain a common mistake in writing and how to fix it.
- Write a word problem that uses today's skill, then solve a partner's.
Homework and more practice
Free online practice with hints and printable worksheets for this skill: eurekami.com/math/kindergarten.
Free lesson plan from eurekami.com/lesson-plan-builder