Assess students' ability to sort a mixed set of pictured or hands-on objects by color and by shape and to explain their reasoning. Students will create groups based on one attribute (color) and another (shape), label each group using age-appropriate vocabulary (e.g., "red," "square"), provide simple oral or written justifications for why each object belongs in a group, and compare groupings when items share attributes. Tasks may include deliberately mixed or ambiguous items to probe understanding of attributes and classification.