Choose the most productive experimental conditions and run a new experiment combining those. Run experiments using radish seeds or other different types of seeds. Run experiments using different hydroponics systems. Create a computer Hypercard stack or video of your experiment and explain the procedure, data and results. It is helpful for students to already be familiar with plant life cycles and the parts of a plant.
Roots also stabilize the plant, and keep it from being blown or washed away.
To be valid, experiments must test a single variable by comparing against the standard or control. Leaves grow out of the stem. Students propose a hypothesis and design an experiment to test their hypothesis. They predict what will happen when a single plant growth condition is changed. Students conduct an experiment.