Secret science

Secret science © jogyx -

Knowledge and skills

  • Working scientifically
  • Enquiry skills
  • Critical thinking
  • Non-fiction writing

Investigating secret messages is a really entertaining and interesting investigation for children of all ages. A great way to start is to see if the children can create invisible ink.

You will need:

  • Blank paper
  • Agents e.g. lemon juice, milk, water, apple juice, orange squash, lemonade
  • Cotton buds
  • Small pots (paint trays work well)

Explain that you are going to try to find out what makes the best invisible ink.

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