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Math lesson plan · 2nd grade (Year 3 in England) · 45 minutes

Read and compare temperatures in °C

Measurement

England: Y2 Measurement

Objective and success criteria

Students will: Read and compare temperatures in °C.

  • 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: Read scales that count in 2s, 5s or 10s

Leads to: the next skill in this area.

Materials: Rulers, scales and measuring jugs, Clock faces, Conversion chart, Mini whiteboards and pens, Printed student sheet (below).

Warm-up · 5 min

  • Quick retrieval from earlier learning (Read scales that count in 2s, 5s or 10s). Students answer on mini whiteboards.
  • Show answers together and note who needs support in the main task.

Hook · 5 min

  • Ask the class to estimate the length of the room or the weight of a bag before measuring it.
  • Share the objective: Read and compare temperatures in °C. 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: It was 15 °C on Monday and 25 °C on Tuesday. How many degrees warmer was Tuesday?
  • Step 1: 25 − 15 = 10
  • Step 2: 10 °C
  • Answer: 10
  • 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.
  1. It was 23 °C on Monday and 16 °C on Tuesday. How many degrees colder was Tuesday? → 7Prompt: Find the difference between the two temperatures.
  2. Which temperature best matches inside a fridge? (25 °C / 4 °C / 70 °C / 40 °C) → 4 °CPrompt: Water freezes at 0 °C and boils at 100 °C.

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.
  1. Which temperature best matches a cold winter morning? (60 °C / 30 °C / 2 °C / 90 °C) → 2 °CPrompt: Water freezes at 0 °C and boils at 100 °C.
  2. It was 8 °C on Monday and 11 °C on Tuesday. How many degrees warmer was Tuesday? → 3Prompt: Find the difference between the two temperatures.

Watch out for

  • Measuring from the end of the ruler instead of zero.
  • Converting units the wrong way (multiplying instead of dividing).

Support and stretch

Support

  • Review first: Read scales that count in 2s, 5s or 10s.
  • Use concrete materials: rulers, scales and measuring jugs.
  • 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

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Read and compare temperatures in °C

Name

Date

Score/ 8

  1. Question 1

    The thermometer goes up in 2s. What temperature does it show, in °C?

    010203040?

    Answer

  2. Question 2

    Which temperature best matches a cold winter morning?

    • A. 90 °C
    • B. 30 °C
    • C. 2 °C
    • D. 60 °C

  3. Question 3

    It was 9 °C on Monday and 13 °C on Tuesday. How many degrees warmer was Tuesday?

    Answer

  4. Question 4

    Which temperature best matches inside a fridge?

    • A. 25 °C
    • B. 40 °C
    • C. 4 °C
    • D. 70 °C

  5. Question 5

    It was 23 °C in the morning and 15 °C in the afternoon. How many degrees colder was the afternoon?

    Answer

  6. Question 6

    It was 11 °C on Monday and 22 °C on Tuesday. How many degrees warmer was Tuesday?

    Answer

  7. Question 7

    It was 8 °C in the morning and 11 °C in the afternoon. How many degrees warmer was the afternoon?

    Answer

  8. Question 8

    Which temperature best matches a warm bath?

    • A. 10 °C
    • B. 3 °C
    • C. 37 °C
    • D. 90 °C

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Answer key: Read and compare temperatures in °C

  1. 1. 6

  2. 2. C. 2 °C

  3. 3. 4

  4. 4. C. 4 °C

  5. 5. 8

  6. 6. 11

  7. 7. 3

  8. 8. C. 37 °C