Overview

This lesson is designed to show students the effect inclined planes have on the speed of an object.  Students will also gain an understanding of several forces that act on mobile and immobile objects.

Objectives

1.      Students will be able to define distance, gravity, inclined planes, motion, and speed.

2.      Students will be able to correctly predict the distance that a toy car will travel on an inclined plane at various degrees.

3.      Students will be able to correctly identify the forces acting on various mobile and immobile objects.

Materials

Blocks

Toy cars

Board

Measuring stick

Digital camera

Computer/Internet access

Class Photorem account

Procedures

1.      Place one block under one end of the board.

2.      Ask students to predict where the car will stop after being released from the top of the ramp.

3.      Mark, measure, and record the predicted distance.

4.      Have a student place a car on the track at the top of the ramp and then release it.  Make sure the students do not push the car.

5.      After the car comes to rest, have students mark, measure, and record the distance.  Have students take a photograph of the predicted and the actual result in the same frame.

6.      Have students release the car two more times to see if it stops at about the same place, marking, measuring, taking a photograph, and recording the distance.

7.      Add one more block under the ramp for a total of two blocks, and repeat.

8.      Add one more block under the ramp for a total of three blocks and repeat again.

9.      Post the pictures of the class results on Photorem.com and compare the images with those of other classes.

10. Have a class discussion.

Evaluation

Students will participate in class discussion.

        Did any of the cars go farther than the predictions?

        Did any of the cars not go as far as the predictions?

        Which car traveled the farthest?

        Which car stopped closest to the ramp?

        Why do you think one car went farther than another?

 

Standards

2.2 Students begin to find answers to their questions about the world by using measurement, estimation, and observation as well as working with materials. They communicate with others through numbers, words, and drawings.