The document provides instructions for an activity where students will sort rocks into piles based on different observable properties using various tools. Students are asked to sort rocks in at least 4 different ways, recording their sorting criteria and drawings of each pile on a worksheet. Tools mentioned that can be used include magnifying glasses, rulers, scales, and microscopes to examine properties like size, thickness, weight, color, and microscopic details to categorize the rocks.

1. -685800228600Magnifying Glass<br />Magnifying glasses make things

2. look bigger.

3. They help you see objects close up.