Lesson Plan #:AELP-SCI001
Submitted by: Cindy Robinson, Owasso Junior High, Owasso, Oklahoma
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 teachers 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): 8, 9
OVERVIEW: The concepts of matter can be at times too scientific. This activity enables the students to observe the changes of matter in a fun way. OBJECTIVE(s): Students will be able to:
2 cups sugar
4 cups half and half
2 teaspoon vanilla
1/2 teaspoon salt
clean gallon jug with cap
spoons and cups
large re-sealable plastic bag (1 for each 2 students)
small re-sealable plastic bag (1 for each 2 students).
For a richer tasting ice cream, add four beaten eggs (use PASTEURIZED EGGS) to step 1. Pasteurized eggs are safer than raw eggs. Adding raw eggs to the recipe increases the risk of salmonella poisoning. Please see: http://www.cdc.gov/ncidod/dbmd/diseaseinfo/salment_g.htm
This activity is more pleasant for the teacher when it is done outdoors!
ACTIVITIES AND PROCEDURES:
Note: additional salt may be added to decrease freezing time. Have the students guess how long it will take to freeze the ice cream
TYING IT ALL TOGETHER: