Demonstrate how to use melted chocolate to ‘weld’ together edible items to create super-yummy chocolate structures.
- Lots of chocolate in all shapes, sizes and types
- Marshmallows, cereal hoops and other small food items
- Reusable, metal water bottles
- Hand-hot water
- Add hand-hot water to the metal bottle and put the lid on firmly.
- Hold the edge of a piece of chocolate against the bottle’s side, keeping hands away from the bottle’s surface.
- When the edge of the chocolate piece has melted, use as a ‘cement’ to join it to another piece of chocolate or to other edible items.
When heated, chocolate undergoes a physical change, from a solid to a liquid. As it cools it returns to being a solid. Chocolate melts between 30–40°C which is why chocolate is ‘melt in the mouth’.
- Can you make a tall chocolate tower?
- What other super-structures could you make?
- Does some chocolate make better ‘cement’ than others?
- How strong are your chocolate structures?
Download a handy PDF version of this lesson plan for you to keep.
Science investigations now available to buy online
All of our science investigations are available to buy at our online shop. Individual investigations cost just £7.50 each and our whole school packs of themed science week activities for Years 1-6 are priced at £45. Click here to view all our science investigations.
Practical science beyond Science Week
Love to Investigate
Love to Investigate is a set of 126 scientific investigations that encourage children to be curious, ask questions and explore the world around them.
Our series of practical, exciting investigations cover tricky topics in new and unusual ways, including evolution, mechanisms and air resistance. All activities come with background knowledge for teachers who haven’t taught the topic before and method boards to help children work more independently.
Find out more about Love to Investigate.