Lesson Planning

Teaching

• Understand that, if a material does not absorb water, it is said to be waterproof (Yr1).
• Investigate the absorbency of fabrics by 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 (Yr2).
• Consider the question: How can we make the fabric waterproof? Rub wax crayon on the fabric and repeat the dropper investigation.
• Discuss the findings and suggest explanations.

Activities

1. Understand that, if a material does not absorb water, it is said to be waterproof.
2. Investigate the absorbency of fabrics and the effect of adding a layer of wax crayon.
3. Discuss the findings and consider the reasons for fabrics being waterproof.

Investigation
Investigate the absorbency of fabrics by using a dropper.
Year 1 - Investigate how to make the fabric waterproof.
Year 2 - Observe and measure the number of drops and the time they stay on the cloth before being absorbed.

Vocabulary
Material, properties, absorbency, waterproof, strong, weak, hypothesis