After filling 6 vases with water, the children used the primary colours of food colouring (red, blue, and yellow) to make the 6 colours we see in a rainbow. The children figured out that red and yellow mixed together made orange, blue and yellow made green, and red and blue made purple.
After each colour was made, the children placed the stem of carnations in each vase.
The vases were placed on a shelf. The children checked the carnations throughout the day to see if anything was happening to them. Hopefully we will return after the long weekend to find something has changed.