Lesson Planning
Teaching
- Discuss waterproof materials and their uses.
- Investigate the absorbency of fabrics.
- Consider the question: How can we make the fabric waterproof?
- Discuss findings and suggest explanations.
Activities
- Understand that, if a material does not absorb water, it is said to be waterproof.
- Investigate the absorbency of fabrics and the effect of adding a layer of wax crayon.
- Discuss the findings and consider the reasons for fabrics being waterproof.
Investigation - pattern seeking, problem solving
Investigate the absorbency of fabrics by stretching them over a jar to make them taut and using a dropper to drop water onto the cloth. Observe and measure the number of drops and the time they stay on the cloth before being absorbed.
Vocabulary
Material, properties, absorbency, waterproof, strong