# Mechanics

• 0

### How Do Wheels Work? - The Mechanics of Axles and Wheels

2 years ago

Wheels are to be found everywhere and have been used since ancient times. But why do we use them and what is the science behind how they work?

• 18

### Gears and Pulleys Simple Machines Lesson

13 months ago

This is part 4 of a 6 part hands-on unit on inventions and simple machines. Build and test pulleys, play pulley tug-of-war, find out how a clock works, and more! My lessons are geared toward 3rd-4th grade level children...

• 0

### Can you catch the dollar? - physics of free fall

3 years ago

Starting with a tricky challenge of catching a bill we will discuss the physics of free fall. The intrigued fact whether the free fall depend on body mass or not dates back to the Galileo Galilei's experiments within...

• 15

### Wheels and Axles Lesson

13 months ago

This is part 3 of a 6 part hands-on unit on Inventions and Simple Machines. Build and test waterwheels, use cylinders to make wheel cookies, experiment with matchbox cars to demonstrate friction, compare the mechanical...

• 9

### Hooke's Law and Simple Harmonic Motion

6 months ago

Who is Robert Hooke and what is Simple Harmonic Motion?

• 37

### Lever and Screw Simple Machines Lesson

13 months ago

This is part 2 of a 6 part hands-on unit on Inventions and Simple Machines. Build and test catapults, lift an adult using a lever, test out screws of various threads, and more! My lessons are geared toward 3rd-4th grade...

• 12

### Inclined Planes and Wedges Lesson

13 months ago

This is part 1 of a 5 part hands-on unit on Simple Machines and Inventions. Race cars down ramps, compare carrying luggage to pulling it up an inclined plane, slice through apples using wedges,...!

• 2

### Inventions and Simple Machines Presentations and Field Trip Ideas

13 months ago

For the presentations following our 6 part hands-on unit on Inventions and Simple Machines, each child presented on a famous inventor. Following presentations, they sang the "Simple Machines" song and then ate a simple...

• 0

### Pre-Ignition Theory - Cause & Effect

2 years ago

This hub looks at the different operating conditions that can cause detonation and preignition and explains the differences.

• 24

### How to Build a Newtonian Demonstrator

15 months ago

A Newtonian demonstrator is also called the "Newton's Cradle" and is sold as an office desk toy. It comes in a dramatic range of sizes and shapes, as you can see. The Geek Group in Kalamazoo makes the giant size.