Students will investigate the power of friction as they test the force needed to move, gather data on their findings, and inspire home safety ideas.

GUIDING QUESTION
What is friction and how does the type of surfaces affect the force of friction?

LEARNING OBJECTIVES
Students will be able to:
• manipulate and read a spring scale.
• collect data regarding the force of friction.
• identify friction as a force that slows motion between two surfaces.
• construct a graph showing the amount of friction vs. type of surface.
• propose a model to explain how friction works.

OVERVIEW
Friction is a common and pervasive force that students experience every day. And yet, little
thought is given to the nature and uses of friction. In this lesson students will investigate
frictional forces between a block of wood and 3M™ Sandpaper. They will measure, record,
and graph the force needed to move the block of wood across various grades of 3M™
Sandpaper using either spring scales or rubber bands. In addition to the grade of 3M™
Sandpaper, other variables could be considered.

Students can extend their investigation into friction at home in the form of a demonstration,
short activity, problem to solve, or research to conduct.

Includes follow-up family activity.
Grades 3- 5