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Skip to 0 minutes and 7 secondsSPEAKER: The focus of this week is changing materials. Materials can be changed. They can be bent, squashed, twisted, and stretched. They can be heated and cooled, mixed and dissolved. There can be physical and chemical changes. These changes can be permanent or reversible. However, many of these concepts can be confusing for both children and adults. The confusion arises as some changes of materials can be difficult to observe, leading to comments such as it's disappeared or it's magic. Over the week, you will focus in on dissolving and irreversible changes. These can be tricky concepts, and we'll support you to further your understanding.

Skip to 0 minutes and 56 secondsAs in the previous weeks, you'll also examine common misconceptions and find out how to elicit these from the children you teach. You'll then focus on activities which you can use in lessons to help address these misconceptions.

Introduction to changes of materials

This week we will look at changes in materials, such as dissolving and chemical reactions.

Some changes can be reversed (physical changes) whilst others are irreversible (chemical changes). We will start by looking at dissolving.

Your explanations

In the comments below, post how you would explain what dissolving is. What key words might you wish to use?

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This video is from the free online course:

Teaching Primary Science: Chemistry

National STEM Learning Centre