Magnet hunt and the iron in cereal

What you need

• A strong magnet, a fridge magnet will do
• Fortified breakfast cereal
• A clear bowl of warm water
• A spoon

How to do it

1. 1

   Walk round the house testing spoons, coins, radiators and door handles, sorting them into magnetic and not.

2. 2

   Crush a handful of cereal to powder and stir it into warm water.

3. 3

   Leave it ten minutes, stirring now and then, until it goes sludgy.

4. 4

   Drag the magnet slowly along the outside of the bowl and look for dark specks following it.

5. 5

   Talk about why iron is added to cereal and what your body uses it for.

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