4TH AND 5TH GRADE
11/13/2009
Friction Physical Science
Objectives
Students will understand the following:
1.Friction is a force that opposes motion, or makes it difficult for an object to move across a surface.
2.The amount of friction depends on the surface type and the force pressing two surfaces together.
3.Everyday life provides examples of how friction both helps and hinders everything we do.
Materials that will be used:
Several derby cars•Several large, thick books, (when stacked, they should be about 1 foot high) Large piece of foam board • Beach towel•Y ardstick • Masking tape • Textbooks • Pencils
•Chalkboard, overhead projector, or chart paper•Crayons, markers, colored pencils
Discussion Questions
1.Explain how surface type influences the amount of friction there is.
2.Discuss the relationship between the size and weight of an object and the amount of friction
that is present.
3.Analyze how friction can be both a positive and negative aspect in our everyday lives. Use examples to support your statements.
4.Sports such as soccer involve running, stopping, jumping, and kicking. Discuss how friction helps players.
___________________________________________________________________________
WeeK of 12/4/2009
We will be starting Catapults project on 12/4/2009. This is A good way to introduce information about Motion, Forces, Energy, and Electric Current.
Objectives
Students will:
• work in groups to build catapults out of everyday objects; and
• demonstrate their understanding of motion and forces by using the catapults to launch objects.
Needed Materials on 12/4/2009
• Pictures of catapults
• Cardboard shoe box (1 for each catapult)
• Rubber bands (4 for each catapult)
• Masking tape (one 6-inch piece for each catapult)
• Plastic spoon (1 for each catapult)
• Marshmallows (2 per group)
• Masking tape (for launching competition)
• Object of your choice to serve as a target
* Note: STS will provide popscicle sticks
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| Last updated 2009/11/01 15:24:37 PST | Hits 58 |
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