Juan Daniel’s Fútbol Frog An Engineering Adventure Meredith Bauer Courtney Peters

The Story  Juan Daniel loves to play fútbol  He lives near El Imposible in El Salvador  El Imposible is an endangered rainforest  During a soccer game, he finds a frog  The frog becomes a “lucky charm”  Challenge: keep frog healthy until Championship game

The Challenge  Create an environment for the frog  Build a model membrane that allows water in  Keep water at constant drip  Water should not flood the frog  The frog should always be wet

The Process 1. Poked hole in cup; created our sponge frog 2. Filled cup with cotton balls 3. Covered bottom of cup with plastic wrap 4. Poke holes in plastic wrap 5. Place frog in container 6. Place mesh over top of container 7. Pour water through the membrane device

Problems We Faced  Not enough cotton balls (started with 0)  Holes were too big in plastic wrap  Pouring the water into a small hole  Getting the amount of water correct  Flowed too fast  Flowed too slow/got stuck in cup

Improvements  Filled cup completely with cotton balls  Used fine-point wire to poke holes  Used a pitcher with a spout to pour

Future Improvements  Use wire mesh instead of cloth mesh  Find a way to cut a bigger hole in the cup  Try different materials that were not available  Use materials that weren’t suggested in book  Use more natural materials  Leaves  Grass  Rocks

Pictures

Engineering Design Process  Ask: How do we keep the frog wet?  Imagine: Different materials  Plan: Created the design  Create: Built the membrane device  Improve: More cotton balls, future possibilities