Assess grade 3–5 students' ability to classify common household items (paper, cardboard, glass jar, plastic bottle, plastic bag, banana peel, coffee grounds, soiled paper towel, pizza box) into recycle, compost, or trash. Students select the correct category for each item and write one brief reason using simple rules (clean/dry recyclables, organic for compost, contaminated/non-recyclable for trash). Include a short reminder to check local guidelines and avoid contamination.