The student applies the particle model from Lesson 1 to two new demonstrations. The student then designs a particle model to explain the two demonstrations. The model is then used to attempt to explain three new demonstrations. The model is evaluated and updated accordingly. This NGSS lesson includes Understanding by Design (UbD) big ideas.
Demonstrations require a 2-liter bottle, balloon, ice water and hot water. Video links are available of the demos.
Accompanies other lessons in Unit 2, but can also stand alone.