A Study of Spider Webs
Many people do not like spiders and consider them pests. However, spiders provide a service to humans. They eat many of the insects that bother people. In this 7th grade life science activity, students will study 4-6 spider webs and discover what and how much spiders eat. They will identify the spiders building the webs, collect data and make observations related to the webs and what the spiders eat. They will use the information to develop a conclusion.
2) Students will collect data and make observations.
3) Students will use data to construct a graph.
4) Students will use data to make a conclusion about the eating habits of spiders.
5) Students will make a model of a spider web.
Context for Use
Description and Teaching Materials
Locate several spider webs (4-6). Identify each spider using an insect identification book. Place the information you collect in your science journal. Draw a detailed sketch of each spider's web you find. (To make drawing the web easier, use the same sequence the spider uses to build their web, as explained by your teacher). Form a hypothesis about the size of a spider as directly related to the number of insects it catches. Over a period of two weeks, observe each web daily and record the location of any insects caught within the web on your sketch. Note the date of the catch. Students should prepare a lab report to organize the information collected. Make a table for each spider's web to keep a record of the number of insects collected each day. Then we will use the recorded data to make a graph for each web. Make a list of the kinds of insects caught in the web (use an insect identification book). Use the information to write a conclusion about spider webs. Students are encouraged to take pictures or collect pictures from the internet and magazines to enhance their report.