The Air Jordan 1 started as a rough prototype. The PlayStation began as a clunky gray box bolted to a CD player. How does a first draft become an icon?
By the end of this lesson, you will be able to:
Click a card to see what each word means. Click it again to close it. You'll meet every one of these in the lesson below.
Some of the most famous products in the world did not start out looking famous. They started as clumsy, unfinished first attempts. Click each card to look closer.
Before we follow a design from sketch to store shelf, we need two key ideas. They sound similar, but they play different roles.
Engineering is a field that applies scientific principles to designing and constructing. Engineers use what scientists discover about forces, materials, electricity, and energy to build things that work in the real world.
Design is the process of planning and building that solves a problem or meets a need. Design always starts with a problem: shoes wear out, games are boring, backpacks hurt your shoulders. The design is the answer.
Engineers design solutions everywhere you look:
Every design problem begins with the same question: what are the criteria and constraints? Compare the two cards below. The colors will follow these ideas through the whole lesson.
Your design team is building a new school backpack. The client sent over six notes. For each one, decide: is it a criterion (something the backpack must do) or a constraint (a limit on the design)?
Engineers everywhere follow the same seven-step cycle, from sneaker designers to NASA. Click each step to reveal what happens there. Open all seven to complete the cycle.
The steps below got scrambled. Click them in the correct order, starting with the step where you define the problem.
Remember the rough Air Jordan and the gray 1991 test console from the start of the lesson? Now you can name what they were.
A prototype is an early model of a design that is tested and refined. The Air Jordan 1, 2, and 3 each had prototypes: rough versions built to answer questions like "does it grip?", "does it last?", and "does it look right?" before millions of pairs were made.
Iterations are the repeated cycles of designing, testing, and refining. Each trip around the design cycle is one iteration, and each iteration makes the design a little better.
Seven versions and counting: that's iteration. Each console was designed, tested by millions of players, and refined into the next one. The cycle never really ends.
Here's the whole process applied to a problem you might actually have: a messy school locker. Read each chunk one at a time and watch how criteria, constraints, prototypes, and iterations all show up.
Three beats to remember, then every key term in one table.
| Term | What It Means | Example |
|---|---|---|
| Engineering | A field that applies scientific principles to designing and constructing. | Using physics about forces to design a bridge. |
| Design | The process of planning and building that solves a problem or meets a need. | Creating a backpack that stops shoulder pain. |
| Criteria | The specific requirements that a design must meet. | The shoe must grip the court and support the ankle. |
| Constraints | The limitations that affect the design process. | Budget under $15, must fit a 12-inch locker. |
| Prototype | An early model of a design that is tested and refined. | The 1991 gray PlayStation test console. |
| Iterations | The repeated cycles of designing, testing, and refining. | PS1 → PS2 → PS3 → PS4 → PS5, each one improved. |
| Design Process | The seven-step cycle engineers follow to solve problems. | ASK → IMAGINE → PLAN → CREATE → TEST → IMPROVE → SHARE |
Five questions covering everything you discovered, including brand new design problems to solve. Answer every question, then submit.
Engineering design connects to everything you build and test in science class. Extension challenges: redesign your own backpack on paper. List 3 criteria and 3 constraints, sketch a prototype, and trade with a partner to "test" each other's designs. Or pick a product you use daily and research how many iterations it went through before the version you own.