Materials for Insulation/Lesson

Materials for Insulation Year 3 and 4 - student lesson plan Outline:
Whole group discussion about keeping warm with a class of 32 followed by an investigation into keeping a drink warm with the class arranged in groups of four.

Learning Objectives for science

• develop knowledge of everyday materials and their insulating properties;
• recognise that some materials are better insulators than others;
• reinforce skills of hypothesising predicting and investigative ability;
• plan and carry out a fair test with help.

Resources

Digital and standard thermometers, glass beakers, bubble wrap, cotton wool, foil, newspaper, measuring jugs, water, basins, work books. Some means of recording the work, e.g. an investigation template.

Introduction – 15 minutes

1. How do we keep ourselves warm? What kinds of materials do we use to keep warm? 2. Discuss the meaning of ‘insulation’ and seek examples of things in everyday life. Why do you think they are good insulators? 3. Teacher sets the scenario for the investigation: ‘I take my hot drink to the playground – what materials could I wrap it with to keep the drink warm for the longest time possible?’ 4. Children make their hypothesis for the investigation and form groups. 5. Following discussion, the children predict the order of worst to best insulators.

Key questions and language

What is insulation? How do we keep ourselves warm? What kinds of materials do we use to keep warm? Why do you think they are good insulators?

Development – 50 minutes

6. List the available equipment on the board for children to choose. 7. Discuss the investigation with the class. 8. How can we investigate which material will insulate best? How can we make our comparison fair? Which things will change? What will be kept the same? Write up ideas on the board for children to refer to. 9. Children now design their investigation in groups. Which beaker feels the warmest on the outside at the beginning, middle and end of the investigation? What does this tell you? Why do you think this is so?

Conclusion – 15 minutes

Groups complete their investigation, recording results and their conclusions. Gather class together. Did all groups reach the same conclusion? Which were the best insulators? What do you think? But where did the heat go?

Additional activities

• Groups able to represent their finding in graphs might use computers to draw them.
• Talk about other insulators. Where would they fit into our list of good and bad? Is anything better than nothing as an insulator?

Assessment

Formative and diagnostic: through discussion and listening to each group while they work. Summative: through the completion of the investigation write-up. Note individual contributions to the whole.