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Which fabric is the stretchiest?

Science Year 2
This unit is part of Year 2 Science Squash, Bend, Twist, Stretch

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Objectives

Consider different fabrics and what they could be used for. Devise an investigation to test the elasticity of the fabric and record the results.

Science Objectives
i) Identify and compare the suitability of a variety of everyday materials, including wood, metal, plastic, glass, brick, rock, paper and cardboard for particular uses.

ii) Find out how the shapes of solid objects made from some materials can be changed by squashing, bending, twisting and stretching.

Working Scientifically

  1. Ask simple questions and recognise that they can be answered in different ways.
  2. Observe closely, using simple equipment.
  3. Perform simple tests.
  4. Identify and classify.
  5. Use their observations and ideas to suggest answers to questions.
  6. Gather and record data to help answer questions.

Extended Writing Opportunities
Letter: The Olympics committee want to know which is the best stretchy fabric for the swimsuits of the Olympic swimming team. Write a letter summarising your investigation and findings.

Lesson Planning

Teaching

  • Examine fabrics and discuss the requirements of some clothes.
  • Talk about how to test fabric's elasticity properties and make predictions.
  • Consider these questions: What length is the fabric at the start? To what length does it need to stretch? What length does it return to?

Activities

  1. Look at a selection of fabric and understand why stretchy fabric is sometimes used in clothing.
  2. Investigate and explore the elasticity of fabric and make predictions.
  3. Begin to understand how to make a test fair and to record results in a bar chart.

Investigation - exploring, pattern seeking, problem solving
Talk about how to test fabric's elasticity properties, make predictions and devise an investigation based on attaching weights to the ends of strips of fabric.

Vocabulary
Shape, changed, twist/twisting, squash/squashing, bend/bending, stretch/stretching, material, properties

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