Assess students' ability to identify, sort, and compare natural and human-made objects in their environment by observing examples, describing observable properties (material, shape, purpose), explaining why items belong to each category, and noting similarities, differences, and simple environmental impacts; include tasks such as picture or classroom-item sorts, short written/oral justifications, Venn-diagram comparisons, and brief field observations suitable for Pre-K–Grade 2 with moderate analytical demands.