Your student plants fast-growing seeds such as radish, bean, or mung bean in two identical containers, keeping one upright as the control and laying the second on its side as the test group. Over five to seven days, they record root direction daily in a structured observation table, sketching what they see in each container. This gravity effect on plant root growth lab is written for grades 4 through 6 and introduces the concept of gravitropism through direct, observable comparison rather than reading alone.

The sheet fits naturally into a plant biology or earth science unit study and works as a standalone investigation without requiring any prior experiment in the sequence. By the time your homeschooler fills in the conclusion prompts, they have moved from forming a hypothesis to interpreting real data, and can explain in their own words why roots in the tilted container still grew downward relative to gravity rather than relative to the container wall.