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Everyday Materials · Spring Term

Material Properties: Hardness and Softness

Describing materials based on whether they are hard or soft and testing their resistance to change.

Key Questions

  1. Compare the hardness of different everyday materials.
  2. Explain why we use hard materials for some objects and soft for others.
  3. Predict which material would be best for building a strong tower.

National Curriculum Attainment Targets

KS1: Science - Everyday materials
Year: Year 1
Subject: Science
Unit: Everyday Materials
Period: Spring Term

About This Topic

Physical properties involve describing how materials look and feel. Year 1 pupils learn to use scientific vocabulary such as hard, soft, stretchy, stiff, shiny, dull, rough, smooth, bendy, waterproof, and absorbent. This aligns with the National Curriculum target of describing the simple physical properties of a variety of everyday materials.

This topic is highly experimental. Students learn that the properties of a material determine its use, for example, why we use glass for windows (it is transparent) but not for footballs (it is brittle). Students grasp this concept faster through structured discussion and peer explanation during 'fair test' experiments.

Active Learning Ideas

Watch Out for These Misconceptions

Common MisconceptionStudents often think 'hard' and 'strong' mean the same thing.

What to Teach Instead

Show that a biscuit is hard but not strong (it breaks easily), while a piece of string is not hard but is very strong. Hands-on 'breaking' tests help clarify these different properties.

Common MisconceptionChildren may believe that all plastics are 'bendy'.

What to Teach Instead

Provide a variety of plastics, from a flexible carrier bag to a rigid plastic ruler. This helps them see that one material type can have different properties.

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Frequently Asked Questions

What are the key property words for Year 1?
The curriculum highlights: hard/soft, stretchy/stiff, shiny/dull, rough/smooth, bendy/not bendy, waterproof/not waterproof, absorbent/not absorbent, and opaque/transparent.
How do I teach the difference between 'absorbent' and 'waterproof'?
Use a sponge and a plastic sheet. Show how the sponge 'soaks up' and 'holds' the water (absorbent), while the water 'slides off' or 'sits on top' of the plastic (waterproof).
Is it safe to test 'transparency' with glass in Year 1?
It is safer to use clear plastic or 'safety glass' (perspex). If using real glass, ensure it is thick and handled only by the teacher, or use glass objects like jars that are less likely to shatter.
What are the best hands-on strategies for teaching physical properties?
Predict-Observe-Explain (POE) cycles are very effective. By asking students to predict if a material will sink or float before they touch it, you engage their prior knowledge and encourage them to look for physical evidence to support their ideas.

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