Requirements: Jars, white flowers (chrysanthemums, gerberas or carnations) and various food dye.

Instructions:
- Fill up jars with water and food dye.
- Sit the flowers in the water.
- They will start to change colour after about an hour but best results occur over night.
- Don’t forget to discuss what is happening and why!

Source: theimaginationtree.com (an excellent blog!)