Does your shirt hate water? In the activity, future engineers observe the hydrophobic effect in fabrics. They brainstorm and test some ideas for waterproofing fabrics.
Observation Milk Fat Lesson
Turn your class loose to experiment with the different fat content in skim milk, whole milk, half and half, and heavy cream. This is a visually vibrant experiment, as learners drip food coloring on the surface of the products and measure...