Objective

By the end of this lesson, you will be able to create your own homemade slime using simple household ingredients and understand the basic chemistry behind its formation.

Materials and Prep

You will need:

• 1/2 cup of white school glue
• 1/2 cup of liquid starch
• Food coloring (optional)
• Measuring cups
• Bowl and spoon for mixing

No prior knowledge is required for this lesson.

Activities

1. Mix the white school glue with a few drops of food coloring in a bowl.

2. Slowly add the liquid starch to the glue mixture while stirring continuously until the slime forms.

3. Knead the slime with your hands until it reaches the desired consistency.

Fourth Grade Talking Points

• What is slime made of?

"Slime is made of molecules called polymers that can stretch and flow like a liquid, but also hold their shape like a solid. The glue and liquid starch react together to form these polymers, creating the slime."

• Why does the slime feel slimy?

"The polymers in the slime are long chains of molecules that slide past each other, giving the slime its slimy and stretchy texture."

• Can we change the color of the slime?

"Yes, by adding food coloring to the glue mixture, we can create colorful slime in different shades."