Assess students' ability to design a simple controlled experiment testing how different amounts of sunlight affect plant growth: write a clear, testable hypothesis; identify independent, dependent, and controlled variables; choose appropriate materials and sample size (same species, pots, soil, water); outline step-by-step procedures for assigning sunlight treatments, measurement methods (e.g., height, leaf count), schedule and duration, basic data recording and graphing, and describe expected results, possible sources of error, and simple improvements.