Objective
By the end of this lesson, you will be able to investigate and understand the suitability of natural and processed materials for different purposes.
Materials and Prep
- Various natural materials like wood, cotton, wool
- Various processed materials like plastic, glass, metal
- Objects made from both natural and processed materials for comparison
- Water and different liquids for testing purposes
- Writing materials for recording observations
No special preparations are needed for this lesson.
Activities
- Material Hunt: Go on a scavenger hunt around your house to find objects made from natural and processed materials. Make a list of your findings.
- Water Test: Test how different materials react to water. Record whether they absorb water, repel water, or dissolve in water.
- Strength Test: Compare the strength of natural and processed materials by trying to bend or break them. Record your observations.
Talking Points
- Natural vs. Processed: "Natural materials come from plants or animals, like wood from trees or wool from sheep. Processed materials are made by people, like plastic or metal."
- Uses of Materials: "Different materials have different properties. For example, wood is good for making furniture because it's strong, while plastic is good for making bottles because it's lightweight."
- Testing Materials: "We can test materials by seeing how they react to water, how strong they are, or what happens when we try to bend them. This helps us understand what they are good for."