Lesson 22 of 84 · Engineering and Design
Lesson⭐ 30 XP🛠️ Engineer ShopTesting and Improving Prototypes
Engineering and Design.
🎯 Your mission
Understand the idea. Then look for it everywhere.
⚡ The twist
Every solution creates a new problem. That's good — that's the next project.
Mind = Blown
🚀 The Saturn V rocket burned 20 tons of fuel per second at liftoff.
Make a hypothesis first
Predict: which design will hold the most weight?
What You'll Learn
The scientific method is a systematic approach to investigating questions. It involves making observations, forming hypotheses, conducting experiments, analyzing data, and drawing conclusions.
Key Words
- record
- hypothesis
- variable
Steps
Look at the vocabulary words and write a definition for each in your own words.
Design an experiment to test a hypothesis. Identify your independent variable, dependent variable, and controls. Run the experiment and present results.
Observe what happens and describe it in detail.
Record your observations in your science journal with measurements and descriptions.
Check Your Understanding
Question 1
1 of 3What is a hypothesis?
Where you see this in real life
Your phone, your bike, your shoes — all designed with this idea.
Stretch Challenge
Try this in real life this week.
Build something — anything — out of stuff in your recycling bin.
For the dinner table
“What's something around the house you'd redesign — and how?”
Next Smart Experiment
We'll pick an experiment that matches exactly how you're thinking right now.
Share this experiment
Send it to a parent who's looking for a 10-minute kitchen science win.
Checkout complete lesson on Engineering and Design for 4th Grade
Get the full Engineering and Design track as a printable PDF — all lessons, worksheets, and answer keys.