Photosynthesis

In Third Grade, we talked about the function of the leaf.  We learned that leaves need CO2, water, and sunlight to make food (sugar) and also oxygen.  The water in the bottle below will turn blue when it has oxygen.  We predicted that as photosynthesis happens, the water will turn blue – as soon as the sun came out – it did!  It showed that oxygen was being released into the water. The children also got to observe their leaves under a microscope – they were looking to see if they could see the leaf’s stoma.