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+ ward ' s science Page 1 Bear Trap: Finding Tardigrades Submitted by: Karen H. Recommended Grade Level(s): Appropriate for: Grade 10 Time Requirements: Activity Time: Multiple class sessions Teaching Topics & Concepts: Ecology and Biology National Science Standards Alignment NGSS: HS-LS3-1, HS-LS4 Materials: • Moss or lichen sample • Microscope • Slide • Coverslip • Petri dish Step-by-Step Procedure: How to Find Terrestrial Tardigrades 1. Collect a clump of moss or lichen (dry or wet) and place in a shallow dish, such as a Petri dish. 2. Soak in water (preferably rainwater or distilled water) for 3–24 hours. 3. Remove and discard excess water from the dish. 4. Shake or squeeze the moss/lichen clumps over another transparent dish to collect trapped water. 5. Starting on a low objective lens, examine the water using a stereo microscope. 6. Use a micropipette to transfer tardigrades to a slide, which can be observed with a higher power under a compound microscope. https://serc.carleton.edu/microbelife/topics/tardigrade/index.html This content is being brought to you by the Ward's World, Science By You program. This program brings lesson and classroom activity ideas directly from science teachers around the nation right to you. From best practices to activities, Science by You offers inspiration for every subject and every grade level. Interested in sharing your own content? Learn how today. PMS200 Black 70% Cool Gray 10 Black Astra Regular get for free from dafont.com Common collection sites for moss are in shady spots on lawns and under trees. Common collection sites for lichen are trees and old brick patios.

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