TEKS & Objectives
7.7. Force, motion, and energy. The student knows that there is a relationship between force, motion, and energy. The student is expected to:
7.3.A analyze, evaluate, and critique scientific explanations by using empirical evidence, logical reasoning, and experimental and observational testing, so as to encourage critical thinking by the student
We will use engineering to creatively solve problems.
I will design, build, and test a structure using simple machines.
1. Watch video.
Generation genius video: Simple Machines (K-2)
2. Review vocabulary and complete quiz.
Inclined Plane A simple machine that has a gently sloped surface so it can be used to move objects upwards with less force. Ramps are examples of inclined planes.
Screw An inclined plane wrapped around a center rod. A surprising example of a screw is a spiral staircase.
Wedge A simple machine that gets thinner at one end that is used to split material such as wood. A knife is an example of a wedge.
Lever A plank that rests on something underneath and moves up and down. A seesaw is a lever.
Pulley A wheel and rope that can change the direction of a force. A flagpole uses a pulley to raise the flag.
Wheel and Axle simple machine used to move objects across a distance using a round part (wheel) and a long part (axle). Cars have wheels and axles.
3. Make the catapult seen in the video.
DIY video segment from GG Simple Machines
Alternate Activity:
Find the simple machines that make up roller coasters.
Click here to read about the many simple machines found in roller coasters.
Look up some YouTube videos about roller coasters and see how many simple machines you can spot.
Try to use an inclined plane to create enough speed to complete a roller coaster loop:
Speaking of inclined planes…
4. “Genius Challenge – Simple Machines”
