Daily Objectives

EXPERT GROUPS

▫ Break into Expert Groups, based on what you studied for the homework assignment:

     1) Volcanoes                       4) Deep-focus earthquakes
     2) Hotspot volcanoes         5) Geographic features
     3) Earthquakes                   6) Thickness of Earth's crust

▫ Record the names of your colleagues in your Expert Group.

▫ Examine the maps that each person in your Expert Group brought today for their homework assignment. Does each map show exactly the same thing? Compare maps; note any similarities and differences. If you have new group members, bring them up to speed on what you have done. By the time you are done with this portion of the work, every person in your Expert Group should have the same information about your topic.

▫ Using your world map from last class, the ocean floor map at the left side of the room, and the world map at the back of the room, locate on your Expert Group maps our 14 study sites from last class.

▫ For each of the 14 study sites, determine the characteristics of that site based on your group's area of expertise. (For example, if your area of expertise is "Geographic features", then for each of the 14 sites, describe the site's topography, what its geographic setting is, whether it is on a mountain, island, coastline, and so on.) Record your observations for each site on the Expert Group Summary Sheet provided. Before you leave this group, everyone in the group should have a complete set of all the same information!

JIGSAW GROUPS

Compiling the Data

▫ Break into Jigsaw Groups, one Expert "puzzle piece" in each Jigsaw Group.

▫ Record the names of the others in your Jigsaw Group.

▫ In your Jigsaw Group, examine each of the 14 study sites. For each site, each Expert should call out what they know about that site, and everyone should record it on their own Jigsaw Group Summary Sheet.

▫ When everyone is confident and comfortable that all the group members have all the information, one person will be appointed to make a "clean" copy to be handed in. Be sure all the group members' names appear on this copy. While this person is creating the clean copy, the rest should begin the next part.

Analyzing the Data

You have just participated in a very large data-gathering exercise. Now comes the fun part: scientifically analyzing the data! Your task: study the data and pick out patterns. Pick out as many patterns as you can.

For example, maybe you notice that for every site located in a mountainous area, the Earth's crust is very thick. (Please note: that particular pattern probably is *not* one that you will find! I'm giving it as an example of a kind of pattern you might look for.)

Make the longest list possible of the patterns you observe.

Examine a map of plate boundaries. Add its information to your blue sheet.

w Next step: investigate these patterns and what they might mean! To do this, it would be very helpful if you have in front of you a world map showing tectonic plate boundaries. The textbook you are using may have this; please examine it and find out if it does; if it does, please bring it to class next time!