TABLE OF CONTENTS - Lindbergh School District

Strand 2: Properties and Principles of Force and Motion
2. Forces affect motion
Major Objectives IS Suggested Activities Suggested Assessments
Concept A: Forces are classified as either
contact forces (pushes, pulls, friction,
buoyancy) or non-contact forces (gravity,
magnetism) that can be described in
terms of direction and magnitude
a. Recognize that magnets attract and
repel each other and certain materials.
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a. Using magnets with north and south poles,
students will explore how magnets attract or
repel each other and certain materials (i.e.,.
metal, aluminum, plastic, cloth, etc.). (1.2;
1.3; 3.2)
a. Students will complete a T-chart identifying
which poles attract or repel. Given a set of
materials and magnets, students will separate
into two groups: those that attract and those
that repel.
b. Describe magnetism as a force that can
push or pull other objects without
touching them.
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b. Using magnets with north and south poles
and a toy metal truck, students will explore
how to pull the truck forward (attract) or
push the truck back (repel) without
touching the magnet to the truck. (1.8; 3.3;
4.4)
b. Given two separate diagrams of a magnet in
front of a truck, students will label and color
the magnet to indicate which pole will push
the truck and a second diagram to indicate
which pole will pull the truck.
c. Measure (using nonstandard units) and
compare the force (i.e., push or pull)
required to overcome friction and move
an object over different surfaces (i.e.
rough, smooth).
Concept B: Every object exerts a
gravitational force on every other object
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c. Using cardboard, rough sandpaper, cloth,
and a toy truck, students will explore which
surface allows the truck to travel the
farthest. Students will push the truck over
each surface using the same amount of
force. (1.3; 1.8; 2.3; 3.3)
c. Students will measure and record their
findings on a chart.
a. Describe Earth’s gravity as a force that
pulls objects on or near the Earth
toward the Earth without touching the
object.
C3 a. On the playground, students will use a ball
and place it on the top, flat part of the slide
(no movement). They will then place the
ball where it starts to incline (movement
will occur). (1.3; 2.3)
a. Students will record their observations and
conclude that a force (gravity) pulls the ball
toward the Earth.
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