Primary challenges (ages 5-11)

Typically completed by 5-11 year olds, CREST Star and SuperStar challenges relate to everyday experiences. Children complete eight activities to gain a CREST Award, with each activity taking between 45 minutes and one hour to complete.

The activities are designed to be easy-to-run and low-cost. You don’t need to be a teacher, have a science background or have access to specialist equipment to run them. The packs contain helpful hints and tips for you to use, explaining the scientific themes and offering guidance on conversation topics for your children.

There are more CREST approved resources that have been developed by our partners and providers specific to your region.

To browse the packs, click the buttons below or scroll down.

4 years ago

Eurotunnel Journeys Challenge Pack

This resource is published under an Attribution - non-commercial - no derivatives 4.0 International creative commons licence (

Be Seen Be Safe Activity

Be Seen Be Safe Activity Card Cosmic and Gem have been travelling through the Channel Tunnel on the Eurotunnel with Aunt Stella. “Did you know the bottom of the Channel Tunnel is 250 feet below sea level?” says Aunt Stella. “Wow, it must be really dark in the tunnel!” exclaims Gem. “‘What happens when the tracks break on railways? How do the train drivers make sure there is no one on the line when they are driving along?’” asks Cosmic “Railway workers have to wear special clothing to make sure they are seen. Can you figure out what the best material to use is?” replies Aunt Stella. Your challenge Help Gem and Cosmic figure out the best material to help railway workers be seen in the dark. Cosmic thinks they need to wear something shiny Gem doesn’t think what they wear makes a difference Aunt Stella thinks they need to wear something white What do you think? Discuss • Have you noticed what you can see in the dark? • How will you find out if different materials can be seen in the dark? • What will you do to make sure it is a fair test?

Getting started You need to compare how well each material can be seen. Make a dark space by drawing curtains, working in a corridor or other dimly lit area, to help you see the difference between good and bad light reflectors. Which materials can you see the best? What difference does having more light make? What can you see in complete darkness? Do some colours work better than others? 2/2 Test your ideas Make a table to record your results. Material How well does it reflect? Complete darkness A little bit of light A lot of light Shiny material White material Dark material Share your ideas How did your investigation go? Was there anything you could have improved about your test? Why not design something for Cosmic and Gem to wear? Extra things to do Find out if you can see reflectors in total darkness. Design a warning poster to help children to be safe at night.

Star level

Collections of one hour challenges recommended for children aged 5-7 years that relate to children’s everyday experiences. Find out more about this level and how to gain a CREST Award on the CREST Star page.

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SuperStar level

Collections of one hour challenges recommended for children aged 7-11 years that realate to broader situations that children are likely to have come across. Find out more about this level and how to gain a CREST Award on the CREST SuperStar page.

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