Math lesson plan · 2nd grade (Year 3 in England) · 60 minutes
Make the greatest and least number from digit cards
Number sense
CCSS 2.NBT.A.4England: Y2 Number and place valueEngland: Y3 Number and place value
Objective and success criteria
Students will: Make the greatest and least number from digit cards.
- 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: Value of each digit in a three-digit number
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 · 6 min
- Quick retrieval from earlier learning (Value of each digit in a three-digit number). Students answer on mini whiteboards.
- Show answers together and note who needs support in the main task.
- In 531, what is the hundreds digit worth? → 500Prompt: Hundreds are on the left, then tens, then ones.
- Which number has 1 hundred, 0 tens and 8 ones? (180 / 1008 / 801 / 108) → 108Prompt: A three-digit number has a hundreds digit, a tens digit and a ones digit.
- Which digit is in the tens place of 746? → 4Prompt: From the right: ones, tens, hundreds.
Hook · 6 min
- Show a number in the news or a price tag and ask what each digit is worth.
- Share the objective: Make the greatest and least number from digit cards. Read the success criteria together.
I do: model it · 12 min
- Work through the example out loud, saying why you do each step, not just what you do.
- Example: Use each digit card once: 6, 1, 9. What is the greatest three-digit number you can make?
- Step 1: Largest to smallest: 9, 6, 1
- Step 2: 961
- Answer: 961
- Pause after each step and ask a student to say what comes next.
We do: guided practice · 12 min
- Do these together. Students try each step on whiteboards before you reveal it.
- Use the hints as prompts rather than giving the answer.
- Use each digit card once: 8, 1, 6. What is the greatest three-digit number you can make? → 861Prompt: The hundreds place is worth the most.
- Use each digit card once: 3, 1, 2. What is the smallest three-digit number you can make? → 123Prompt: Put the smallest digit where it is worth the most.
You do: independent practice · 17 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 · 7 min
- Two questions on their own. Sort answers into got it / nearly / not yet to plan the next lesson.
- Use each digit card once: 9, 4, 7. What is the smallest three-digit number you can make? → 479Prompt: Put the smallest digit where it is worth the most.
- Use each digit card once: 0, 7, 9. What is the smallest three-digit number you can make? → 709Prompt: Can a three-digit number start with 0?
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: Value of each digit in a three-digit number.
- 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/grade-2.
Free lesson plan from eurekami.com/lesson-plan-builder