Seventh Grade, Mechanical Engineering Projects, Lessons, Activities (Page 4)

Domino Theory

Science Fair Project Idea

Scientific Method

Have you ever set up a line of dominoes and watched them fall? If you wanted to make your line of dominoes fall faster, do you think you should set the dominoes up with more or less space between them? Set your dominoes up in a straight line, using a ruler to keep the spacing between them constant. Try different spacings at 0.5cm increments. Conduct multiple trials at each spacing, and time how long it takes for a fixed total length of dominoes to fall (e.g., a 1.5 or 3.0 meter length of… Read more

Engineer a Cell Phone Stand

Science Fair Project Idea

Engineering Design Process

Look around you. What types of objects do you see in the room? Furniture, lights, a computer, a fan, pencils, books, etc.? Where did they come from? Odds are you did not build them yourself. You or your parents probably bought them at a store. Before that, they were built in a factory somewhere. And even before that, they were probably designed by engineers. You might think of engineers when you think of complex machines like rockets or huge structures like bridges, but engineers also design… Read more

Gears-Go-Round!

Science Fair Project Idea

Scientific Method

Music boxes, bicycles, and clocks all have one thing in common: GEARS! You might say that gears make the world turn, since they are in so many mechanical instruments. How do they work and how do you know which gears to use? Find out in this simple experiment. Read more

Ping Pong Pickup Challenge for Grades 6-8

Lesson Plan Grade: 6th-8th

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In this fun engineering lesson plan, your students will build devices from paper, tape, string, and paper clips to pick up and retrieve a ping pong ball. The challenge is to pick up the ball from as far away as possible! Elementary school and high school versions of this lesson plan are also available. The 2023 competition is over, but you can see what students built and learn about the winners on the 2023 Engineering Challenge summary page. Read more

NGSS Performance Expectations:

MS-ETS1-2. Evaluate competing design solutions using a systematic process to determine how well they meet the criteria and constraints of the problem.

Solar-Powered Cars for Junior Solar Sprints

Lesson Plan Grade: 5th-8th

Help your students learn about solar energy, physical forces, and other science topics with this hands-on engineering experience. This lesson plan will show you how to get your classroom started building solar-powered cars that your students can enter, if desired, in regional Junior Solar Sprint competitions. No previous experience with electronics or building things is necessary. Get the dates and location for your regional competition. Read more

NGSS Performance Expectations:

3-5-ETS1-3. Plan and carry out fair tests in which variables are controlled and failure points are considered to identify aspects of a model or prototype that can be improved.
MS-ETS1-4. Develop a model to generate data for iterative testing and modification of a proposed object, tool, or process such that an optimal design can be achieved.

The Trick to Beating a Carnival Game

STEM Activity

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Have you ever played a game at a carnival, trying to win a stuffed animal or other prize? It might look easy, until you try it. Why are those "simple" games at the fairs and carnivals so hard? Is it really lack of skill or coordination or do those concessionaires use some basic laws of science to help them set up the games in their favor? In this science activity, you will investigate how physics can help you win — or lose — at the classic game of trying to knock over a pyramid of… Read more

What's the Best Way to Disable a Drone?

Science Fair Project Idea

Engineering Design Process

Drones are small, fast, and maneuverable - this can make them very hard to knock down! Check out this Mark Rober video where he explores both how professional defense companies and some backyard YouTube engineers tackle the problem of knocking drones out of the sky. Can you take this engineering challenge on yourself? What methods can you devise to take down a drone? Which one works the best? Drones can be expensive, and you probably do not want to risk damaging a $1,000 drone for your science… Read more

Build a Machine to Lift Water

Lesson Plan Grade: 4th-8th

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What would your students do if your town's water supply was cut off due to an equipment failure or natural disaster? Inspired by Global Problem Solvers: The Series, in this lesson plan they will tackle a real-world engineering challenge by building a prototype of a device that can manually pump water during an emergency. They will also think like entrepreneurs and come up with a business plan for how their device could be produced, sold, and used in the real world. This lesson is one of… Read more

NGSS Performance Expectations:

3-5-ETS1-1. Define a simple design problem reflecting a need or a want that includes specified criteria for success and constraints on materials, time, or cost.
3-5-ETS1-2. Generate and compare multiple possible solutions to a problem based on how well each is likely to meet the criteria and constraints of the problem.
3-5-ETS1-3. Plan and carry out fair tests in which variables are controlled and failure points are considered to identify aspects of a model or prototype that can be improved.
MS-ETS1-1. Define the criteria and constraints of a design problem with sufficient precision to ensure a successful solution, taking into account relevant scientific principles and potential impacts on people and the natural environment that may limit possible solutions.
MS-ETS1-2. Evaluate competing design solutions using a systematic process to determine how well they meet the criteria and constraints of the problem.
MS-ETS1-4. Develop a model to generate data for iterative testing and modification of a proposed object, tool, or process such that an optimal design can be achieved.

Build a Water Sprinkler Toy

STEM Activity

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Do you enjoy playing with water? Have you ever considered building a water sprinkler toy? It is easier than it looks! Get some PVC pipes, a few connectors, and a backyard water hose, then drill a few holes and start connecting! What will be your most creative and most fun design? Read more

Choosing the Best Gear Ratio for Maximum Bike Speed

Science Fair Project Idea

Scientific Method

Are you into cycling and speed? Then this is the science fair project for you! In this science fair project, you will determine the best gear ratio for your bike, to get the highest speed after a curve and onto a straightaway. You will learn a lot about applied mechanics and gears, all while having fun riding your bike. Read more

Seventh Grade, Mechanical Engineering Projects, Lessons, Activities (57 results)

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