A rod or shaft that runs through the center of a wheel or pair of wheels. It allows the wheels to turn

A part that helps reduce friction and supports a moving part, like an axle. On your balloon car, this was often the straw or tube the axle went through.

The main frame or base of a vehicle (like your balloon car) where all the other parts, such as the axles and wheels, are attached.

To look at your design and test data to decide how well it met the criteria and constraints.

o change or adjust a design after testing it to make it better. (This is part of the "Improve" step in iteration.)

The object, system, or process you design and create to successfully solve the problem.

To repeat a process of building, testing, and improving your design. You keep making changes until the solution is better.

To check if your prototype works and how well it meets the criteria and constraints

An early, working model of your solution that you can test.

To think of many possible ideas or solutions to a problem, usually in a group.

The limitations or rules you must follow, like materials, time, or cost (the limitations). Example: You can only use plastic straws.

The things your design must do to be considered successful (the goals). Example: The car must hold an egg.

A challenge or need that engineers try to solve or meet

The plan or drawing created before building something. It's figuring out how your solution will work.

Using science, math, and creativity to design and build things that solve problems

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Question	Answer
Axle	A rod or shaft that runs through the center of a wheel or pair of wheels. It allows the wheels to turn
Bearing	A part that helps reduce friction and supports a moving part, like an axle. On your balloon car, this was often the straw or tube the axle went through.
Chassis	The main frame or base of a vehicle (like your balloon car) where all the other parts, such as the axles and wheels, are attached.
Evaluate	To look at your design and test data to decide how well it met the criteria and constraints.
Modify	o change or adjust a design after testing it to make it better. (This is part of the "Improve" step in iteration.)
Solution	The object, system, or process you design and create to successfully solve the problem.
Iterate/Iteration	To repeat a process of building, testing, and improving your design. You keep making changes until the solution is better.
Test	To check if your prototype works and how well it meets the criteria and constraints
Prototype	An early, working model of your solution that you can test.
Brainstorm	To think of many possible ideas or solutions to a problem, usually in a group.
Constraint	The limitations or rules you must follow, like materials, time, or cost (the limitations). Example: You can only use plastic straws.
Criteria	The things your design must do to be considered successful (the goals). Example: The car must hold an egg.
Problem	A challenge or need that engineers try to solve or meet
Design	The plan or drawing created before building something. It's figuring out how your solution will work.
Engineering	Using science, math, and creativity to design and build things that solve problems

Created by: user-1982390

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