Whoa! What just happened? That's right, change is everywhere. But what exactly is changing? Middle school science sleuths get to the bottom of the changes matter can experience. Through simple demonstrations, engaging videos, and an...

Using the 5E method for teaching about kinetic energy, potential energy, and conservation of energy, this two-week unit with many videos and possible extensions is sure to keep pupils engaged as they are learning.

Planning a unit on simple machines? Save some time and energy with this collection of lessons and activities that explores how these devices are used in the real world to make life a little easier. 

[Free Registration/Login may be required to access all resource tools.] The law of conservation of mass and an example.

[Free Registration/Login may be required to access all resource tools.] Explores the conservation of mass and energy in nuclear reactions and Einstein's equation.

A simple tutorial that includes interactive activities and videos to introduce the law of conservation of mass.

[Free Registration/Login may be required to access all resource tools.] Explains Law of conservation of mass and why chemical equations must be balanced.

Created to teach students of the 21st century, Sophia is bringing the laws of mass straight to your fingertips. Become the commander of your own learning experiences as you take part in this brief tutorial. [0:56]

[Free Registration/Login may be required to access all resource tools.] Describes the law of conservation of mass.

Everything in our universe has mass- from the smallest atom to the largest star. But the amount of mass has remained constant throughout existence even during the birth and death of stars, planets and you. How can the universe grow while...

Learn about the conservation of mass and energy as it applies to different living systems.

This resource includes videos, interactives, and additional resources to help students understand the law of conservation of mass and how to balance chemical equations.

This lesson explains the law of conservation of mass within chemical reaction with audio and quiz questions.

Law of conservation of mass: No atoms are created or destroyed in a chemical reaction. They just join together in a different way than they were before the reaction, and form products. This means that the total mass of the products in a...

Learn how mass is conserved in physical and chemical changes.

[Free Registration/Login may be required to access all resource tools.] In this online tutorial students will explain the law of conservation of mass, the law of definite proportions, and the law of multiple proportions. They will also...

[Free Registration/Login may be required to access all resource tools.] In the following online tutorial students will describe chemical reactions using word equations and know the correct symbols to use in order to write skeleton...

Explore balanced chemical equations in this tutorial. Tutorial includes videos, interactive activities, and practice to help students understand balanced chemical equations and the Law of Conservation of Mass.

[Free Registration/Login may be required to access all resource tools.] Provides the definitions of physical and chemical changes in matter and gives examples. The law of conservation of mass is also described.

Resource investigates the beliefs of Dalton's atomic theory which consists of four parts. Which points do we still use today, and what have we learned since Dalton?

Students learn about the Newtonian mechanics principle of conservation of angular momentum and the application in the quantum mechanical world.

[Free Registration/Login may be required to access all resource tools.] Students take a closer look at how our understanding of the atom has evolved over time.

[Free Registration/Login may be required to access all resource tools.] Using the law of conservation of energy as a starting off point, students use the specific heat equation to perform calculations that relate mass, specific heat,...

[Free Registration/Login may be required to access all resource tools.] Students explore mass relations between reactants and products for a given chemical process, and practice balancing chemical equations.