Lesson plan

Physical changes introduction

Summary
Manipulate materials and decide if the physical change is reversible or not. Then make ooblek.
Science content
Chemistry: Physical Changes, Solutions, Mixtures and Separating (2, 4, 5, 6)
Procedure

Introduction to physical change stations, followed by discussion of which physical changes are reversible.
Make ooblek - a physical change. It is reversible and can be seen when water evaporates from a small drop of ooblek leaving the powdery cornstarch behind.
Study a physical change, water changing state, in more detail, by measuring the temperature of water in different states.

Grades taught
Gr 2
Teaching Site
Weir Elementary