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Eighth Grade Projects, Lessons, Activities (1,100 results)

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STEM Activity
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What in the world is a differential and what does it do? A differential is a mechanism that helps cars go around turns without the wheels slipping. In this activity you will build your own working model differential from a building toy like K'Nex®! Read more
STEM Activity
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Can you build a sandcastle that can support a brick? Try it out in this fun STEM activity! Read more
Science Fair Project Idea
Engineering Design Process
People with limited mobility, especially in their hands, may not be able to use traditional video game controllers. Adaptive game controllers use a variety of peripherals, like larger buttons, foot pedals, or specialized joysticks, to let people with limited mobility play video games. This video shows how to build a very simple adaptive controller that works with Scratch games on a Raspberry Pi. Can you build an adaptive game controller for a hardware platform and game of your choice? If you… Read more
Lesson Plan Grade: 8th-12th
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In this STEM lesson, students will build a mini popsicle stick drone and use feedback control with an Arduino and an ultrasonic sensor to control the drone's altitude. Read more
STEM Activity
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Can you use electrically charged "wind" to make something move? Find out in this fun project as you build your own ion wind rotor. Read more
Science Fair Project Idea
Scientific Method
Did you know that making a musical instrument is not just an art, but a science, too? You can discover just how scientific by building your own xylophone (or a set of chimes) from copper pipe. First you'll need to do some research about the math and physics involved in the sounds of a xylophone. For example, there are equations that describe the transverse (side-to-side) vibrations of a pipe. These vibrations create the sounds you hear. So, to get specific sounds, xylophone makers must apply… Read more
Lesson Plan Grade: 5th-8th
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"Diver and Lemon shark" © 2004 Hpm~commonswiki What helps SCUBA divers, sharks, fish, and other marine organisms stay in the water column? In this hands-on investigation, students will explore the concepts of buoyancy and mass to create a device to help an action figure stay neutrally buoyant, just like a scuba diver. Read more
NGSS Performance Expectations:
  • MS-PS2-2. Plan an investigation to provide evidence that the change in an object's motion depends on the sum of the forces on the object and the mass of the object.
Science Fair Project Idea
Scientific Method
You can compare the picture quality for photos taken at different shutter speeds with the camera handheld vs. with the camera on a tripod. (This is best done with a camera that has manual exposure control.) Read more
Science Fair Project Idea
Scientific Method
Crown gall is a plant disease caused by the soil bacterium Agrobacterium tumefaciens. This project uses tomato plants to investigate whether garlic extract can prevent crown gall infection. Read more
Science Fair Project Idea
Scientific Method
One strategy you may have heard suggested for dealing with the COVID-19 epidemic is to let nature take its course and let COVID-19 infect enough of the population for us to reach the herd immunity threshold. Does this make sense as a public health strategy? You can explore this question scientifically using SimPandemic, a free online tool for modeling infectious disease outbreaks. Before you begin, you will need to know a bit about herd immunity. Herd immunity, sometimes called community… Read more
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Free science fair projects.