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Explore how gravity and the moon affect tides. Find out how tides are useful to man.
If you have ever spent time at the beach, you probably noticed that the water rises slowly on the shore for six hours, then slowly recedes, or falls back, for another six hours. These movements happen twice a day and are called tides.
Invite students working in small groups to investigate what causes the tides. Have group members organize research. Focus questions might include: How and why do tides occur? What causes the shift in tides? Are tides useful to man? Does man harness this evergy for his own use? If so, how? Do tides damage or help the environment?
Once research is complete, groups will use Crayola® Model Magic® to create a relief sculpture based on what they have learned about tides. Use a large piece of plywood, thick foamcore, or thick cardboard as a base for artwork.
Find a clean area on the floor to work. Knead modeling compound thoroughly for best adherence. To create new colors, knead 2 primary colors until well mixed.
Press modeling compound firmly onto board. Use a rolling pin to roll out large flat areas. Push your thumbs and fingers into soft modeling compound after it is laid onto the board for interesting textures.
Model Magic that is fresh from the pack will stick to itself. Dried pieces can be glued together. After piece is completely dry, it may be displayed on a wall for all to see!
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