45

Lesson 45 of 84 ยท Engineering and Design

Experimentโญ 30 XP๐Ÿ› ๏ธ Engineer Shop

The Scientific Method (Part 3)

๐ŸงชLab Brief #45

Engineering and Design.

๐ŸŽฏ Your mission

Predict it first. Then prove yourself right (or wrong).

โšก The twist

The first design always fails. That's the point.

๐Ÿคฏ

Mind = Blown

๐Ÿ› ๏ธ The first computer bug was a literal moth stuck inside a machine in 1947.

๐Ÿ”ฎ

Make a hypothesis first

Guess: what's the weakest part of this build?

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

  • hypothesis
  • variable

Materials Needed

  • paper clips
  • rubber bands
  • string

Safety First

  • Dispose of materials properly after the experiment.
  • Handle glass items carefully to avoid breakage.
  • Do not mix unknown chemicals together.

Steps

Step 1 โ€” Read

Read about Engineering and Design and write down three key facts.

Step 2 โ€” Do

Design and build a bridge from newspaper and tape that can hold a textbook. Test it and redesign to make it stronger.

Step 3 โ€” Observe

Observe what happens and describe it in detail.

Step 4 โ€” Record

Record your observations in your science journal with measurements and descriptions.

Check Your Understanding

Question 1

1 of 3

What is a scientific model?

๐ŸŒ

Where you see this in real life

Every bridge, building, and gadget you've ever used started with this.

๐Ÿ†

Stretch Challenge

Try this in real life this week.

Find something that's broken at home and try to figure out *why* it broke.

๐Ÿ‘จโ€๐Ÿ‘ฉโ€๐Ÿ‘ง

For the dinner table

โ€œWhat's something around the house you'd redesign โ€” and how?โ€

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Next Smart Experiment

We'll pick an experiment that matches exactly how you're thinking right now.

๐ŸชจShare card

Share this experiment

Send it to a parent who's looking for a 10-minute kitchen science win.

๐Ÿ–จ๏ธ

Checkout complete lesson on Engineering and Design for 4th Grade

Get the full Engineering and Design track as a printable PDF โ€” all lessons, worksheets, and answer keys.

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