Assess students' ability to design and conduct a controlled experiment testing how varying amounts of sunlight affect plant growth. Scope includes writing a testable hypothesis, identifying independent, dependent and controlled variables (e.g., light exposure levels, same species/soil/water), planning simple procedures and measurement schedule (height, leaf count) over multiple days, recording and organizing data, creating basic graphs, interpreting results to support conclusions about sunlight’s effect, and noting sources of error and suggested improvements.