Web-building spiders have three claws that they have evolved to grip silk threads; ground spiders have two claws and a tuft of hairs where that third claw normally is. Maybe we could create a spider with realistic 3-claws that close like a spider's do and the teacher could hang it on string to show that it holds on to the "silk thread" well. Then you could have alternative models to see how they hold onto silk as well, including the ground spider claw configuration (2 claws with hair tufts) vs. a different 3-clawed configuration vs. 4-claws or something else? It would be modeling adaptation and natural selection of morphology.
Posts made by MMilne
RE: Teaching Aid Wish List: May 2019