All spiders have a definite structure.
Spiders look different depending upon their habitat.
Students will classify spiders according to observable attributes. Students will be able to explain how physical characteristics of a spider will help it to survive in its environment. Let's make a chart of the things we have been talking about. 10 minutes Students will be given photographs of spiders. When the students have finished, we will discuss the reasons students classified the spiders the way that they did.