Math lesson plan · Kindergarten (Reception and Year 1 in England) · 30 minutes
Number words eleven to twenty
Number sense
CCSS K.CC.A.3England: Y1 Number and place value
Objective and success criteria
Students will: Number words eleven to twenty.
- 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: Number words zero to ten; Teen numbers: ten and some ones
Leads to: the next skill in this area.
Materials: Place value chart, Base-ten blocks or a number line, Mini whiteboards and pens, Printed student sheet (below).
Warm-up · 4 min
- Quick retrieval from earlier learning (Number words zero to ten; Teen numbers: ten and some ones). Students answer on mini whiteboards.
- Show answers together and note who needs support in the main task.
- Write "one" as a number. → 1Prompt: Say the word out loud.
- Which word is 0? (one / two / zero) → zeroPrompt: Count up to 0 and listen to the last word you say.
- Write "two" as a number. → 2Prompt: Say the word out loud.
Hook · 3 min
- Show a number in the news or a price tag and ask what each digit is worth.
- Share the objective: Number words eleven to twenty. Read the success criteria together.
I do: model it · 7 min
- Work through the example out loud, saying why you do each step, not just what you do.
- Example: Write "nineteen" as a number.
- Step 1: "nineteen" is 19.
- Answer: 19
- Pause after each step and ask a student to say what comes next.
We do: guided practice · 6 min
- Do these together. Students try each step on whiteboards before you reveal it.
- Use the hints as prompts rather than giving the answer.
- Write "thirteen" as a number. → 13Prompt: Teen numbers start with 1 ten.
- Which word is 18? (ninety / eighteen / nineteen / eighty) → eighteenPrompt: 18 is ten and 8.
You do: independent practice · 7 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 6 questions are on the student sheet below, with answers in the key.
Exit ticket · 3 min
- Two questions on their own. Sort answers into got it / nearly / not yet to plan the next lesson.
- Which word is 12? (thirteen / twelve / thirty / eleven) → twelvePrompt: 12 is ten and 2.
- Write "twenty" as a number. → 20Prompt: Teen numbers start with 1 ten.
Watch out for
- Reading 1,045 as one thousand four hundred five: point to each place and say its value.
- Thinking a longer number is always bigger, even with decimals (0.45 vs 0.5).
Support and stretch
Support
- Review first: Number words zero to ten.
- Use concrete materials: place value chart.
- Give the first step of each question, or a partly worked example to finish.
- Pair with a confident partner for the guided practice.
Stretch
- 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