1. Topic-
Exploding Rainbow
2. Content-
Surface Tension: Hydrophylic, Hydrophobic, Surface tension, lipid.
3. Goals: Aims/Outcomes-
1.To demonstrate molecules in motion and surface tension.
2.To demonstrate the hands-on mini-lab.
3.To incur science discussion and begin inquiry based discussion for science notebook entry.
4. Objectives-
1.To demonstrate how a soap molecule can weaken the chemical bond of fat and protein molecules and interfere with the surface tension of milk.
2.To introduce the terms hydrophylic and hydrophobic as useful part of the mini-lab and an extension of Greek/latin prefix-suffix portion of their science notebooks.
5. Materials and Aids-
small paper plates
cotton swab
food coloring
concentrated dish soap
6. Procedures/Methods-

A. Introduction-

1.small plate
2.enough milk to cover the bottom of the plate
3.add one drop each of four colors of food coloring keeping the drops close in the center of the dish.

B. Development-

The teacher will demonstrate the procedure on the overhead/Elmo projector or via Smartboard

C. Practice-

The teacher will target two students to demonstrate the procedure along with the teacher demo.

D. Independent Practice-

1.The students will conduct the procedure in pairs sitting at their work station
2.Students will generate new ideas experimenting with the soap, milk, and food coloring.
3.Students will postulate about the reasons for the movement of the colors, the speed of the movement, and any other actions apparent.
4. Students will record their observations in their science notebooks.

E. Accommodations (Differentiated Instruction)-

1.Students with auditory processing difficulties will have access to written copies of the entire procedure
2.Students with visual processing difficulties will have opportunities to see and hear the procedure upon demonstration and Video

F. Checking for understanding-

1.The teacher will check the student's notebook entries
2.The teacher will visualize the students' procedures.
3.The teacher will call on students with questions about the procedure:
a.How would the procedure change if you used water instead of milk? What about different percentage milks? 1%, 2%, whole, cream?
b. Does the fat content of the milk affect the reaction?
c. Does the type of soap affect the reaction.

G. Closure-

1.The students will pour the milk in the sink and throw the plates in the trash.
2.The students will discuss the terms hydrophylic, hydrophobic, and surface tension.

This Lesson Plan is available at (www.teacherjet.com)