This simple investigation can be used with a lesson on the scientific method. Students compare the amount of water in three types of plants: a root (carrot), a fruit (grape) and a leaf.
They compare their data to the premise that as much as 95% of a plant is water by employing calculations to determine what percent of the original plant was water. Finally a set of analysis questions is used to apply knowledge and propose an explanation for their results.
Grade Level: 7-9 | Time Required: 15 min set-up, 20 min gathering data next day