Try this science experiment with children over the course of several days. Fill up 4 vases with different coloured water and put 1 white carnation in each one. Watch the flowers over the next four days change to the colour of the water.
STEM Design Challenges are fun, engaging activities that stimulate problem-solving and critical thinking for students, grades 2-8. (Paid product comes with modifications to add or decrease rigor for younger/older students.) More