Objective
By the end of this lesson, you will be able to apply arithmetic concepts to measure and mix ingredients to make homemade soap.
Materials and Prep
You will need:
- Measuring cups and spoons
- Mixing bowls
- Soap base
- Essential oils for fragrance
- Colorants (optional)
- Knowledge of basic arithmetic operations (addition, subtraction, multiplication, and division)
Activities
1. Measurement Challenge: Use your measuring cups and spoons to measure the soap base and essential oils needed for the recipe. Practice adding and subtracting the amounts as you go.
2. Fraction Fun: When dividing the soap base into smaller portions, use your knowledge of fractions to divide it into equal parts.
3. Mix It Up: Combine the ingredients and use multiplication to calculate how many times to stir the mixture for it to be well-blended.
Fifth Grade Talking Points
- "When we measure the soap base, we are using our knowledge of addition and subtraction to get the right amounts."
- "Fractions help us divide the soap base into equal parts, just like dividing a pizza into slices."
- "Multiplication comes in handy when we need to stir the mixture multiple times to make sure everything is well-mixed."