Lesson plan

States of an ice lolly

Getting children to make an ice lolly and then observe its changes of state is a straightforward and fun way to teach them about materials and their properties.

Our Ice Lolly lesson plan is made up of five 55-minutes sessions investigating the properties of materials and working out what we can make with them, allowing children to develop their enquiry skills using an open learning process.

Pupils will first be introduced to the differences between a solution and a suspension by looking at the ingredients of an ice lolly in their liquid state. They will also plan their experiments, taking into account how to do this in a fair way and how to draw up a hypothesis.

They will then test different materials to find out which are the most effective – for both the lolly and its stick. After this, they will make a mould for their lolly using the FormBox, taking into account the correct health and safety measures and how to master the machine itself.

By the time their lollies have been made, they will have observed each component and material in a number of states. They will have discerned the difference between a liquid and a solution and will know how to evaluate materials based on their functions. Now all that’s left to do is to eat the lollies!

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