Primary challenges (ages 3-11)


Typically completed by 3-11 year olds, CREST Star and SuperStar challenges relate to everyday experiences. Children complete six to 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.

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All SuperStar challenges

  • Text
  • Handson
  • Stem
  • Challenges
  • Discussion
  • Explore
  • Create
  • Experiment
  • Investigate
  • Toothpaste
  • Materials
  • Glue
  • Tomato
  • Yoghurt
  • Superstar
The activities in this pack have been selected from our library of CREST SuperStar challenges. Children need to complete eight challenges to achieve a CREST SuperStar Award. If you want, you can mix and match challenges from different packs, as long as children complete eight SuperStar challenges. This resource is published under an Attribution - non-commercial - no derivatives 4.0 International creative commons licence (https://creativecommons.org/licenses/by-nc-nd/4.0/).

Yummy Yoghurt Makers

Yummy Yoghurt Makers Activity Card You Mita Gabbar RE: Yummy Yoghurt Dear Investigators, I work for Practical Action. We do lots of things all over the world to help people who live in poverty. We work with farmers in Bangladesh. They sell milk from their cows at the local market but if they turn their milk into yoghurt and sell that instead they can get more money. We help them to do that. In Bangladesh, school is expensive. Farmers can use the money they make from yoghurt to send their children to school. Can you investigate the best way to make yoghurt? Don’t forget to send me the recipe for the most delicious flavour! Mita Gabbar Your challenge Investigate how to make the tastiest yoghurt from milk. Did the different types of milk make different types of yoghurt? Which flavours work best? Discuss Have you eaten yoghurt before? Which kind is your favourite? What type of milk do you think will work best? Why do you need to start with fresh yoghurt to make more? How will you test the yoghurts? You could do a blind taste test.

Getting started Before you start wash your hands with soap and water Pour your milk into a saucepan and gently heat it up. When it is 46 C take it off the heat. Use a thermometer to help you. The yoghurt culture has live bacteria in it. Stir this into the warm milk. Pour the new mixture into a flask. In the morning the milk will have turned into yoghurt! Test your ideas You might like to record your results in a table like this one. You could use a tally to keep track. Yoghurt 1 Yoghurt 2 Yoghurt 3 Number of votes for favourite yoghurt Share your ideas Make a pictogram of each person’s vote – which yoghurt is most popular? Write to Mita to tell her what you have found out about making yoghurt. Extra things to do Design a poster to sell your yoghurt at market. Find out what else you can make from milk. Find out more about the food people eat in Bangladesh. Draw a picture of a meal a child your age might eat in Bangladesh...and include yoghurt! British Science Association Registered Charity No. 212479 and SC039236

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    Challenges collection Suitable for

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    Contents Activity Page A hole in my

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    A Hole in my Bucket Organiser’s C

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    A Hole in my Bucket Activity Card D

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    A Special New Tree Organiser’s Ca

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    A Special New Tree Activity Card De

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    A Sticky Problem Organiser’s Card

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    A Sticky Problem Activity Card Dear

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    Test your ideas You may want to rec

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    What to do 1. Introduce the activit

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    Figure 1 Figure 2 Figure 3 Tape Ela

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    Discuss Children may need to be sho

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    Getting started How will you test y

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    5. Now give each group 5 sheets of

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    Test your ideas Test it with weight

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    Things to think about Birds often w

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    Getting started What materials can

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    Things to think about It is possibl

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    Getting started Where will you look

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    Bumblebee Mystery Pollinator 1 1 2

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    Buy Them Try Them Organiser’s Car

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    Buy Them Try Them Activity Card To:

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    Camouflaged Creatures Organiser’s

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    Camouflaged Creatures Activity Card

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    Cheesy Challenge Organiser’s Card

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    Cheesy Challenge Activity Card Cosm

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    Colorado Brown Stain Organiser’s

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    Colorado Brown Stain Activity Card

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    Crafty Rafts Organiser’s Card Abo

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    Crafty Rafts Activity Card NEWS CRA

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    Disappearing Dinosaurs Organiser’

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    Disappearing Dinosaurs Activity Car

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    Discus Dilemma Organiser’s Card A

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    Discus Dilemma Activity Card Mr Cle

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    Drifting Dandelions Organiser’s C

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    Drifting Dandelions Help our Raveno

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    Fantastic Fingerprints Organiser’

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    Fantastic Fingerprints Activity Car

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    Fossil Folly Organiser’s Card Abo

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    Fossil Folly Activity Card A box of

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    Uncle Astro Get Set Jellies Organis

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    Get Set Jellies Activity Card Uncle

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    Goodbye Old Tree Organiser’s Card

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    Goodbye Old Tree Activity Card NEWS

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    Hoodie Hearing Organiser’s Card A

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    Hoodie Hearing Activity Card Headte

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    How Do You Drink Yours? Organiser

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    How Do You Drink Yours? Tea rituals

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    Share your ideas Do most people dri

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    What to do 1. In advance prepare th

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    NVESTIGATING INK Discuss What ways

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    Things to think about Encourage the

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    Getting started Think about how oth

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    Things to think about The cups and

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    Getting started Some of your fellow

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    CALAMITY What to do 1. Read the ACT

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    Getting started A kite is made up o

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    What to do MAKING TOOTHPASTE 1. Rea

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    Your challenge Bright Smile Toothpa

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    OUTDOOR GYM OUTDOOR GYM Outdoor Gym

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    Outdoor Gym R GYM Activity Card You

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    Test your ideas Which parts of the

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    Things to think about In this activ

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    Discuss Can you think of any intere

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    Playground Games PLAYGROUND GAMES O

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    Playground Games PLAYGROUND GAMES A

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    Polymer Problem Organiser’s Card

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    Polymer Problem Activity Card To: Y

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    Protecting Polymers Organiser’s C

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    Protecting Polymers Activity Card Y

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    ACING ROCKETS Racing Rockets Organi

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    Keywords • Aerodynamics • Fligh

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    Discuss Are all rockets the same sh

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    What to do 1. Read the ACTIVITY CAR

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    RECYCLE REUSE Recycle Reuse Activit

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    Spinning Solutions Organiser’s Ca

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    Spinning Solutions Activity Card Ri

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    Super Spinners Organiser’s Card A

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    SUPER SPINNERS Take it further In t

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  • Page 176 and 177: Testing and Comparing Tea Organiser
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  • Page 180 and 181: Tomato Sauce Organiser’s Card TOM
  • Page 182: Keywords • Sauce • Viscosity SA
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  • Page 196 and 197: Under Your Feet Organiser’s Card
  • Page 198: Take it further There is a wide ran
  • Page 201 and 202: Getting started Cut a big foot shap
  • Page 203 and 204: Things to think about Scientists ar
  • Page 205 and 206: Getting started You could start by
  • Page 208 and 209: Windy Ways Organiser’s Card About
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  • Page 214: Keywords • Nature • Vibration
  • Page 217 and 218: WORM CHARMING Getting started Make
  • Page 219: 6. Help the children to make their

Star level

Collections of one hour challenges recommended for children aged 3-7 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 relate 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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