Assess young learners' understanding of the water cycle (Pre-K–Grade 2) by testing recognition and simple definitions of evaporation, condensation, and precipitation; sequencing the stages from sun-heated water to collection; labeling or matching parts of a basic diagram; identifying everyday examples (puddles drying, fog, rain); and making simple predictions about how changes (more sun, colder air) affect the cycle. Use age-appropriate language with multiple-choice, ordering, and short-response items that require basic explanation and reasoning.