You Will Need
Additional Resources
- A homemade paperclip switch (see Teachers’ Notes)
- Cells (batteries) in battery holders (one power source per pair)
- Double ended crocodile clip leads (3 per pair of children)
- A bulb in a bulb holder per pair of children
- A large selection of items to be tested (see Teachers’ Notes for suggestions)
- A cup of water and another of salt water (optional)