Green Slime (Ooblik)

Purpose: To provide students with experience in making observations and inferences and to learn to distinguish between solid, liquid, and gas

Materials

• prepare slime before class

  Recipe for slime:

  1. 1 box of cornstarch
  2. water
  3. food coloring
  4. flavoring (mint, cherry) optional
  5. Add water to cornstarch to desired consistency (not too dry and not too wet).
  6. Restore materials and clean.
  7. Add food coloring and flavoring. Mix well.
  8. Store in an airtight container.

• 1 10" X 10" square of waxed paper per student
• 1 spoon per student
• 1 sealable sandwich bag per student (optional)

Procedure

1. Give each student a square of waxed paper.
2. Place a small amount of green slime onto the waxed paper.
3. Ask the students to make observations and record what they observe.
4. Ask students if the slime is a solid, liquid, or gas.
5. Ask students to make inferences.
6. Discuss the properties of the slime.
7. Pass out the sealable sandwich bags and have students place their slime in the bag to either take home or to keep for future use. (Students may discard after use.)
8. Restore materials and clean.