![physical and chemical changes header](/sites/default/files/styles/resource_card_image_360x300_/public/2022-11/physical%20and%20chemical%20changes%20header.jpg?itok=dmgnc95b)
Exploring Physical and Chemical Changes
Lessons
Students observe and classify physical and chemical changes of matter.
![What is the Greenhouse Effect?](/sites/default/files/2019-08/what-is-the-greenhouse-effect.jpg)
What is the Greenhouse Effect?
Hands-on Activities
Explore the greenhouse effect and learn about the impacts it can have on the environment.
![Container of flour](/sites/default/files/styles/resource_card_image_360x300_/public/2019-12/Container_of_flour.jpg?itok=jFiB27pV)
Mystery Powders
Lessons
Students investigate the properties of a variety of everyday solids (powders) and liquids to determine the identity of an unknown solid (mystery powder).
![How fast does a heart pump blood?](/sites/default/files/2019-08/pexels-stethoscope.jpeg)
How fast does a heart pump blood?
Hands-on Activities
Get active in this activity and explore the impact of exercise on your heart rate. Ready, set, GO!
![How much air do I breathe in?](/sites/default/files/2019-08/How-much-air-do-I-breathe-in.jpg)
How much air do I breathe in?
Hands-on Activities
Learn how to measure lung capacity and about the factors that can affect our lung capacity in this hands on activity.