2
Procedure
Prior Knowledge
1. Introduce students to the concept of continental movement and plate tectonics.
Call on volunteers to tell what they know about plate tectonics. Display a globe
or world map. Have students look carefully at the continents. Discuss with them
how Europe, Africa, South America, and North America might fit together as
puzzle pieces. Discuss what might explain this fit. Point out that millions of years
ago the continents were joined together in one supercontinent called Pangaea.
Using some of the same evidence that scientists use, they will reconstruct this
supercontinent.
Exploration
2. Have students work in pairs. Distribute the materials to each pair. Provide time
for them to review the instructions page.
3. Explain that the landmasses they will be cutting out represent the continents
and some of the larger islands of the Earth the way scientists think they
appeared 220 million years ago. On a separate sheet of paper, have students
draw a large circle, about 8 inches in diameter, to represent the globe. Then
have them cut them out the islands and continents. Using the legend on the
instructions page, call on volunteers to identify what each symbol stands for.
4. Tell students they are going to use the evidence (symbols) on the continents and
islands to reconstruct Pangaea, the supercontinent. Using the globe or world
map as a reference, discuss with students in what general area the continents
should be positioned. Ask them to identify what they should look for to deter-
mine which continental boundaries should be joined.
5. Using the physical shape of continents, age of rock layers, fossilized desert belts,
and the distribution of fossils, have partners fit together the continents and
islands. Remind them that not all the boundaries may touch and that there
might be areas of water separating some of them. Once students are sure the
landmasses are in the correct position, have them tape or glue them onto the
world map. Have them label their maps along with the time period.
Activity: A Plate Tectonic Puzzle
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