Star activity – Discovery Bag (OPAL)
This activity gets children interested in trees and the that they trees support, and begin to be aware of the differences between trees. For this activity you will need to collect leaves and other tree parts for the children to investigate, and a magnifying glass to study them. You can also download a free tree identification guide from the OPAL website.
SuperStar activity – Windy Way(OPAL)
Have you ever tracked the wind? Use bubbles to follow the gusts and find out which way the wind blows. For this activity you will need a compass, a timer, measuring tape, and of course bubbles!
SuperStar activity - Polymer Problem (Horners)
The scientists at Horners use special substances called polymers to create great new product but now they have run out of ideas... Can you design a great new product using one of their polymers? You can even submit your ideas to be showcased on their Fantastic Plastic website!
MegaStar activity– Tree Trouble (OPAL)
Children get the chance to identify the importance of trees and their biodiversity, carry out a survey, make decisions about how to choose a tree for a particular purpose, and use the internet for research. For this activity the children will need a magnifying glass, binoculars, a net, a bug box, and the OPAL Nature free tree identification guide. This is one of three activities that form the MegaStar Tree for Life project.
Why not get involved in citizen science by taking part in the OPAL Tree Health Survey  and help protect our trees.
SuperStar activity– Yummy Yoghurt (Practical Action)
Yoghurt making is the theme of the latest CREST Star investigation produced in association with Practical Action. In this fun new activity pupils find out how farmers in Bangladesh can earn money for their family by turning milk into yoghurt. They then make a range of different flavoured yoghurts using a variety of different types of milk and fruit. Students also get the opportunity to find out more about schools in Bangladesh and the types of food that families eat there.
CREST star activities in Welsh
Below are some free samples of our recent Welsh translations of CREST Star activities. 25 others are now available in our member’s area. To become a member please register here .These new resources have been developed as part of the Welsh Government’s funding and support for CREST in Wales through the National Science Academy in Wales.
Star activity - Byddwch amlwg, byddwch ddiogel
Be Safe Be seen! Road safely and material science come together in this real world activity that students can recognise from their own lives. Students learn how to recognise a good reflector rather than materials that emit light of their own and learn about road safety in the dark. Students must find out if Gem and Cosmic, our CREST Star characters, can find something to wear that will help them to be better seen in the dark.
Megastar activity - Coeden am Oes (OPAL)
Tree for life! Which trees should a local government greening initiative plant for their new ‘green space’? In this project students will research and survey to find out lots about trees and the life that trees support. The activity links to the work of the The Open Air Laboratories (OPAL) project. You can find out more at www.opalexplorenature.org/crest 
Worshipful Company of Horners This activity introduces children to the world of polymers, and their uses.
Practical Action Practical Action uses technology to challenge poverty in developing countries.