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Science

Sorting Materials

Overview

Children handle a range of materials and sort them using different criteria, discovering that scientists describe materials by their properties.

Learning Objective
Children sort materials by their properties and describe what makes each material useful for different purposes.

Resources needed

  • Collection of materials: wood, metal coin, plastic, cloth, stone, paper

Lesson stages

0 / 7 done
  1. 1 Give each group a collection of materials to handle.
  2. 2 Ask: how are these materials different from each other?
  3. 3 Introduce property words: hard, soft, smooth, rough, shiny, dull, waterproof, bendy.
  4. 4 Sort the materials by one property: hard and soft.
  5. 5 Re-sort by a different property: shiny and dull.
  6. 6 Ask: which material would you use to make a cup? A rope? A window? Why?
  7. 7 Discuss: why does it matter what something is made of?

Tap a step to mark it as done.

Variations

  • Test waterproofing by dripping water onto each material.
  • Test flexibility by trying to bend each material.
  • Sort into natural and human-made materials.
More information

Teach: hard, soft, smooth, rough, shiny, flexible, waterproof, property, material. Using comparative language — harder than, softer than — extends vocabulary naturally.

Start with two contrasting properties only — hard and soft — before introducing more.

Can children correctly sort materials by a given property? Can they give a reason why a material is suitable for a specific use?

Collect materials from the environment: stones, wood, leaves, bark, cloth, soil. No purchased materials needed.

Children sometimes confuse the material with the object. Help them name the material separately from the object: not 'this is a stone' but 'this is made of rock, which is hard and heavy.'

Materials science underpins chemistry, physics, and engineering. Sorting by properties introduces the scientific habit of describing things systematically rather than subjectively.

Activity details
Primary Easy 20 minutes 5 minutes prep Small Group, Whole Class Indoor & Outdoor
Topics
Materials Properties Classification