Lesson Plan #: AELP-ENG002
Submitted by: Rebecca Sexson, Anasazi Elementary School, Scottsdale, AZ
Endorsed by: These lesson plans are the result of the work of the teachers who have attended the Columbia Education Center’s Summer Workshop. CEC is a consortium of teacher from 14 western states dedicated to improving the quality of education in the rural, western, United States, and particularly the quality of math and science Education. CEC uses Big Sky Telegraph as the hub of their telecommunications network that allows the participating teachers to stay in contact with their trainers and peers that they have met at the Workshops.
Date: May 1994
Grade Level(s): 3, 4
OVERVIEW: Slippery Substances are called lubricants. They are very important in modern technology. Cars, trucks, airplanes, and machines all have parts that rub against one another. These parts would heat up, wear down, and stop working if we did not have lubricants. Lubricants reduce the amount of friction between 2 surfaces that move against each other. OBJECTIVE(s):
Students will be able to:
1. Demonstrate which lubricant is best (slipperiest), of those used for the experiment.
2. Explain how a lubricant works. 3. Identify objects that need lubricants to work well.
Teacher Materials = 4 envelopes unflavored gelatin, 8 inch square baking pan, mixing bowl, liquid dish detergent, vegetable oil, 2 bowls, clock or watch with a second hand, a knife, measuring cup Student Materials = pencil, science journals
ACTIVITIES AND PROCEDURES:
TYING IT ALL TOGETHER: Students should now understand vocabulary words such as lubricant, friction, gravity, force, momentum, and machine. This is an ideal activity to follow a study of simple machines. Mr. Gumpy’s Motorcar, written by John Burningham, is a good introduction and motivator. Students should be able to list objects that have working parts that would need lubricants to protect their parts, such as cars, trucks, bicycles, etc.