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Math lesson plan · 2nd grade (Year 3 in England) · 60 minutes

Odd or even? Check by making pairs

Number sense

CCSS 2.OA.C.3England: Y2 Number and place value

Objective and success criteria

Students will: Odd or even? Check by making pairs.

  • 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: Count in twos

Leads to: Even numbers as doubles; Predict whether a sum is odd or even

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 (Count in twos). Students answer on mini whiteboards.
  • Show answers together and note who needs support in the main task.
  1. Count in twos. What is missing? 18, __, 22, 24, 26 → 20Prompt: Each number is 2 more than the one before.
  2. There are 6 pairs of socks. Count in twos: how many socks is that? → 12Prompt: Each one has 2 socks.
  3. Count in twos starting at 25: 25, 27, __, 31, 33 → 29Prompt: Counting in twos from an odd number lands on odd numbers.

Hook · 6 min

  • Show a number in the news or a price tag and ask what each digit is worth.
  • Share the objective: Odd or even? Check by making pairs. 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: Put these squares into pairs. Is the number odd or even? â–  â–  â–  â–  â–  â–  â–  â–  â–  â–  â–  â– 
  • Step 1: 12 makes 6 pairs.
  • Step 2: Even.
  • Answer: Even
  • 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.
  1. Put these hearts into pairs. Is the number odd or even? ♥ ♥ ♥ ♥ (Even / Odd) → EvenPrompt: Each line is a pair.
  2. Is 89 odd or even? (Even / Odd) → OddPrompt: Look only at the ones digit.

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.
  1. There are 13 chairs in a hall. Can they all be set out in pairs with none left over? (Yes / No) → NoPrompt: Pairs with none left over means the number is even.
  2. Put these squares into pairs. Is the number odd or even? ■ ■ ■ ■ ■ ■ ■ ■ ■ (Even / Odd) → OddPrompt: Each line is a pair.

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: Count in twos.
  • 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

  • Move on to: Even numbers as doubles; Predict whether a sum is odd or even.
  • 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

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Odd or even? Check by making pairs

Name

Date

Score/ 8

  1. Question 1

    Leo has 13 socks in a drawer. Can they all be put into pairs with none left over?

    • A. Yes
    • B. No

  2. Question 2

    Is 54 odd or even?

    • A. Even
    • B. Odd

  3. Question 3

    Put these hearts into pairs. Is the number odd or even? ♥ ♥ ♥ ♥ ♥ ♥ ♥ ♥

    • A. Even
    • B. Odd

  4. Question 4

    There are 19 children in a class. Can they all work in pairs with nobody left over?

    • A. Yes
    • B. No

  5. Question 5

    Is 33 odd or even?

    • A. Even
    • B. Odd

  6. Question 6

    Put these triangles into pairs. Is the number odd or even? â–² â–² â–² â–²

    • A. Even
    • B. Odd

  7. Question 7

    There are 14 children in a class. Can they all work in pairs with nobody left over?

    • A. Yes
    • B. No

  8. Question 8

    Put these diamonds into pairs. Is the number odd or even? â—† â—† â—† â—† â—† â—† â—† â—† â—† â—† â—† â—† â—†

    • A. Even
    • B. Odd

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Answer key: Odd or even? Check by making pairs

  1. 1. B. No

  2. 2. A. Even

  3. 3. A. Even

  4. 4. B. No

  5. 5. B. Odd

  6. 6. A. Even

  7. 7. A. Yes

  8. 8. B. Odd