2nd Grade Science Lesson Plan: Mixing Shampoo and Vegetable Oil with Water

Grade: 2nd
Type of Lesson: Demonstration

Learning Objectives:
1. Students will be able to predict what will happen when shampoo and vegetable oil are added to water by drawing a picture.
2. Students will be able to draw how shampoo and vegetable oil react with water.

Grade Level Content Expectations:
S.IA.02.14 Develop strategies and skills for information gathering and problem solving (books, internet, ask an expert, observation, investigation, technology tools).
P.PM.02.12 Describe objects and substances according to their properties (color, size, shape, texture, hardness, liquid or solid, sinking or floating).

Materials:
1. 4 clear cups
2. 2 plastic spoons
3. Shampoo
4. Vegetable oil

Preparation:
1. Create a worksheet by drawing 2 cups. Write “Before stirring” under one cup and “after stirring” on the other cup.
2. Double sided worksheets
3. Clear cup with shampoo in it
4. Clear cup with vegetable oil in it
5. 2 clear cups with water in them

Input
1. Say: Has anyone ever mixed 2 liquids?Maybe you’ve mixed milk & chocolate syrup.I want you to think about what happened to both liquids.
2. Say: Todayyou will be observing what happens when I add a liquid to water. First I’m going to mix shampoo with water and I want you to observe what happens to the shampoo.

3. Explain worksheet to students. Have them make a prediction.
4. Slowly add shampoo to water.
5. Tell students to observe what happens to the liquid as it enters the water. (Does it sink/float?)
6. Have students draw a picture on their worksheet of how the shampoo looked as it entered the water. (Draw this in the “Before stirring” cup)
7. While students are drawing, the shampoo, which initially swirled, will settle at the bottom of the cup and spread out. Make sure students take note of this change and others.
8. Stir the liquid. Tell students to notice what happens to both the water and the shampoo.
9. Have students draw a picture on their record sheet that shows their observations of how the liquids looked after they were stirred.
10. Have students check their prediction.

11. Say: Next,I’m going to mix vegetable oil with water and I want you to observe what happens to the vegetable oil.
12. Have students make a prediction on the other side of their worksheet.
13. Slowly add vegetable oil to water.
14. Tell students to observe what happens to the liquid as it enters the water. (Does it sink/float?)
15. Have students draw a picture on their worksheet of how the vegetable oil looked as it entered the water. (Draw this in the “Before stirring” cup)
16. Stir the liquid. Tell students to notice what happens to both the water and the vegetable oil.
17. Have students draw a picture on their record sheet that shows their observations of how the liquids looked after they were stirred.
18. Have students check their prediction.

19. Ask:
A. Did either of the liquids sink/float? Which one?
B. Did either of the liquids mix with the water or did they remain separate?
C. Which liquid mixed with the water? How can you tell that it mixed?
D. Which liquid did not mix with the water? How can you tell that it didn’t mix?

Evaluation
Formative: Students will be observed during the lesson.
Summative: Students will be assessed by whether they were able to draw two predictions and two observation pictures.