Bat Radar, a Mobile
How would you like to eat a dinner of insects in the dark?! Bats find their food with echolocation—show how with this mobile!
1. Research radar and echolocation, especially with bats. Bats possess an ability, called echolocation, to find insects to eat using sound waves. These animals emit very high-pitched sounds, which bounce off flying insects. Bats "hear" the returning sound waves that help them to find bugs. Compare and contrast differences between radar and echolocation. Then incorporate what you know about bats into a mobile.
2. Use one sheet of Crayola Color Explosion™ Black paper to make the top of the mobile. With Color Explosion Markers, draw the outline of a bat, flying insects, stars, or whatever you imagine will tell people looking at your mobile about echolocation, or bat radar. Draw freehand or make a stencil with recycled cardboard.
3. Punch about four holes in both ends of the paper. Roll ends together and insert brass paper fasteners to make a cylinder. Punch more holes around the bottom of the cylinder, and two more holes at the top. Lace and tie yarn between the top holes to create a hanger.
4. On more Color Explosion™ Paper, draw several bats, insects, and other items to hang from the mobile. Be creative! Punch a hole at the top of each item. Tie pieces to the mobile with yarn. Add a bat with wings spread at the top if you like.
Adult supervision is required for any arts & crafts project. Observe children closely and intervene as necessary to prevent potential safety problems and ensure appropriate use of arts and crafts materials. Some craft items, particularly beads and buttons, are potential choking hazards for young children. Avoid use of such small parts with children younger than 3 years. Craft items such as scissors, push pins and chenille sticks may have sharp points or edges. Avoid use of materials with sharp points by children younger than 4 years. Read all manufacturers' safety warnings before using arts and craft supplies.
Color Explosion™ Black—Wash hands well with soap and water after use.
Scissors—ATTENTION: The cutting edges of scissors are sharp and care should be taken whenever cutting or handling. Blunt-tip scissors should be used only by children 4 years and older. Pointed-tip scissors should be used only by children 6 years and older.
String-Like Materials—Includes string, raffia, lacing, yarn, ribbon, and other similar material. Children 3 years and younger should not be given any string-like material that is longer than 12 inches. Close adult supervision is essential whenever children use string-like material. When crafts are to be worn around the necks of children 8 years and younger, attach the ends of the “string-like material” with clear adhesive tape, which allows easy release of the bond if the craft becomes entangled or caught on equipment. For children older than 8 years, the ends of the “string-like material” may be tied and knotted.
- Make a real-world connection! Invite a guest speaker such as an animal control specialist or zookeeper to share personal experiences and scientific information about bats. Ask the speaker to bring model bats to demonstrate characteristics.
- Students with special needs may find it helpful to have holes punched for them and to use stencils for bats and flying insects.
- Learn more about this fascinating endangered species by reading books such as Bat Loves the Night by Nicole Davies or Outside and Inside Bats by Sandra Markle.
- Assessment: Create a performance assessment rubric with a list of things needed for a complete mobile. Ask students to write questions about bats, investigate, and orally present the answers.
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