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

Choosing materials for a job

Materials and their properties

CCSS NGSS.2-PS1-2CCSS NGSS.K-2-ETS1-1England: KS1 Y2 Uses of everyday materials

Objective and success criteria

Students will: Choosing materials for a job.

  • 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: Properties of materials

Leads to: the next skill in this area.

Materials: A tray of everyday objects, Sorting hoops, Mini whiteboards, A diagram or short video clip of the idea, Printed student sheet (below).

Warm-up · 5 min

  • Quick retrieval from earlier learning (Properties of materials). Students answer on mini whiteboards.
  • Show answers together and note who needs support in the main task.
  1. An umbrella keeps rain off you. Its material must be… (absorbent / waterproof / see-through / soft) → waterproofPrompt: Water must not get through.
  2. Which material is the most flexible? (stone / brick / fabric / glass) → fabricPrompt: Which one can you fold without breaking?
  3. Properties of materials: which statement is true? (Fabric is always waterproof. / Rubber is rigid. / Glass is transparent. / All metals are magnetic.) → Glass is transparent.Prompt: Think about a coin, a window and a raincoat.

Hook · 5 min

  • Pass round objects made of different materials and ask why each one was chosen.
  • Share the objective: Choosing materials for a job. 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: Why is a towel made of fabric like cotton?
  • Step 1: Absorbent fabric soaks up water from your skin.
  • Step 2: So the answer is: It is soft and absorbent
  • Answer: It is soft and absorbent
  • 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. Why are saucepans usually made of metal? (Metal melts on the cooker / Metal is strong and conducts heat to the food / Metal is transparent / Metal is soft and bendy) → Metal is strong and conducts heat to the foodPrompt: The pan must heat up and not melt.
  2. Why are car tyres (tires) made of rubber? (Rubber is a metal / Rubber is flexible and grips the road / Rubber is transparent / Rubber absorbs water) → Rubber is flexible and grips the roadPrompt: Think about grip and bumps in the road.

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. Why are electrical wires made of copper covered in plastic? (Copper conducts electricity; plastic insulates for safety / Copper is magnetic and plastic is shiny / Plastic conducts electricity better than copper / Copper is see-through) → Copper conducts electricity; plastic insulates for safetyPrompt: Which part carries the electricity, and which part keeps you safe?
  2. Why would a chocolate teapot be a bad idea? (Chocolate is magnetic / Chocolate melts when hot water is poured in / Chocolate is too heavy / Chocolate is transparent) → Chocolate melts when hot water is poured inPrompt: What happens to chocolate when it gets warm?

Watch out for

  • Everyday meanings of words getting in the way of the science meaning: define key words explicitly.
  • Remembering facts without the reason: ask "why?" and "what is the evidence?"

Support and stretch

Support

  • Review first: Properties of materials.
  • Use concrete materials: a tray of everyday objects.
  • 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/science/grade-2.

Free lesson plan from eurekami.com/lesson-plan-builder

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Choosing materials for a job

Name

Date

Score/ 8

  1. Question 1

    Choosing materials: which statement is true?

    • A. Cotton wool is good for a raincoat.
    • B. Metal is best for a window you want to see through.
    • C. Glass is a good material for a football.
    • D. A material's properties make it suitable for a job.

  2. Question 2

    Which material is best for a raincoat?

    • A. paper
    • B. cotton wool
    • C. glass
    • D. waterproof plastic-coated fabric

  3. Question 3

    Bridges are often made of steel. Which property matters most?

    • A. softness
    • B. transparency
    • C. strength
    • D. absorbency

  4. Question 4

    Why are saucepans usually made of metal?

    • A. Metal melts on the cooker
    • B. Metal is soft and bendy
    • C. Metal is transparent
    • D. Metal is strong and conducts heat to the food

  5. Question 5

    Which material is best for the handle of a frying pan?

    • A. copper
    • B. a hard plastic that is a thermal insulator
    • C. ice
    • D. glass

  6. Question 6

    Why is a towel made of fabric like cotton?

    • A. It is transparent
    • B. It is soft and absorbent
    • C. It is hard
    • D. It is waterproof

  7. Question 7

    Why are car tyres (tires) made of rubber?

    • A. Rubber is a metal
    • B. Rubber is flexible and grips the road
    • C. Rubber absorbs water
    • D. Rubber is transparent

  8. Question 8

    Why are windows made of glass?

    • A. It is transparent, so light comes in
    • B. It is absorbent
    • C. It is soft
    • D. It is magnetic

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Answer key: Choosing materials for a job

  1. 1. D. A material's properties make it suitable for a job.

  2. 2. D. waterproof plastic-coated fabric

  3. 3. C. strength

  4. 4. D. Metal is strong and conducts heat to the food

  5. 5. B. a hard plastic that is a thermal insulator

  6. 6. B. It is soft and absorbent

  7. 7. B. Rubber is flexible and grips the road

  8. 8. A. It is transparent, so light comes in