1. P.FM. 03.38
Demonstrate when an object does not move in response
to a force, it is because another force is acting on it.
Activity: At Rest
Question
What forces are acting on an object at rest?
Engage and Explore
Have students roll their pencil on their desk. Ask students to talk to their partners
about why it stops and stays at rest.
Explain
MEAP Assessment Clarification
• There may be many forces acting on an object at one time. The combination
of all these forces results in changes in motion or no motion.
• When a heavy object, such as a boulder, is pushed and does not move,
another force is acting on it.
Students fill in the claims/evidence page
Claims Evidence
The pencil is at rest The force of gravity is pulling down
The pencil is at rest Equal air pressure is around the pencil
The pencil slowed down Friction
Elaborate
Find other objects in the classroom and have pairs of students explain to each other
why the object is at rest.
Evaluate
I learned page
Help students come up with statement using the lesson question.
Starter Statement: I learned that there are many forces acting on objects at rest.
Finish supporting the statement with the claim/evidence page.
Vocabulary
Picture labels should include: gravity, air, force (w/arrow)
2. Claims Evidence
I know that ... I know this because …
