CoolStuff Blog

Investigating Projectile Motion in a Controlled Environment
Investigating Projectile Motion in a Controlled Environment
This CoolStuff post walks you through an investigation for students to learn about projectile motion and several different lab challenges you can do with your students related to projectile motion.
Investigating the Scientific Method: A Better Black Box
Investigating the Scientific Method: A Better Black Box
The Investigating the Scientific Method: A Better Black Box kit has a unique low-tech approach that allows students to leave their first day of class with the memorable experience of creating a model to explain their hypothesis. Watch as teachers...
Kinetic Energy and Velocity
Kinetic Energy and Velocity
Walk through an introductory physics lab that allows students to develop a model for the relationship between an object’s kinetic energy and velocity.
Forces and Motion
Forces and Motion
This CoolStuff post describes an introductory physics lab that allows students to develop a model of the relationship between an object’s acceleration and its mass. The algebraic equation representing this relationship will be Newton’s 2nd law of motion.
Understanding the Relationship Between Mass and Weight
Understanding the Relationship Between Mass and Weight
This introductory physics lab helps students separate the concepts of mass and weight and uses experimental data to build a model of the relationship between the two variables.
Representing Motion (Constant Velocity)
Representing Motion (Constant Velocity)
An easy way to introduce students to some of the different representations of motion is to have them investigate the motion of a Constant Velocity Car.
Demonstrating The Fundamentals of Electric Circuits
Demonstrating The Fundamentals of Electric Circuits
Electric Circuits are an essential topic that covers the conservation of charge, the conservation of energy, the flow of current and the concept of voltage. In this article, I will describe in greater detail the concepts from the video and...
Kinetic Energy Demonstrated With Newton's Cradle & Colliding Steel Spheres
Kinetic Energy Demonstrated With Newton's Cradle & Colliding Steel Spheres
Newton's Cradle illustrates for every action, there is an equal and opposite reaction. Thus, when one sphere is swung out and released, one is "kicked" out the other side, two when two spheres are released, and so on. But what...
Centripetal Force Demonstrated With a Twirling Tray
Centripetal Force Demonstrated With a Twirling Tray
The swinging bucket of water has been a teacher favorite for centuries. When a bucket of water is swung in a horizontal circle will the water spill out of the bucket? View the concept of Centripetal Force on this CoolStuff...
7 Energy and Momentum Demos That Will  Engage Your Students!
7 Energy and Momentum Demos That Will  Engage Your Students!
Aside from the Newton’s Cradle and the Faith in Physics pendulum, there are not very many well known energy and momentum demonstrations. In this video and article I write to resolve this. I have especially focused on energy because those...
Top 10 Physics Demos You're Not Doing!
Top 10 Physics Demos You're Not Doing!
This video is a collection of demonstrations that are either original or very rare – and you should be doing them. They come from many physics demonstrations that I have developed over the years. Of course, there are more than...
A Better way of Demonstrating Rotational Inertia
A Better way of Demonstrating Rotational Inertia
Have you ever struggled to describe Rotational Inertia to your students? Then check out this video and blog, which uses our Rotational Inertia Demonstrator because it is an easy way to demonstrate the concept of rotational inertia.