Lesson 5 of 9 · Data and Evidence
Lesson⭐ 30 XPReading Someone Else's Data
Data and Evidence.
🎯 Your mission
Learn the rule. Then catch nature using it.
⚡ The twist
Nature loves to surprise the careful watcher.
Mind = Blown
🔬 The more you look, the more nature shows you.
Make a hypothesis first
Before you start: write down what you think will happen, and why.
What You'll Learn
Before trusting a graph, check three things: what is on each axis, what the units are, and where the scale starts. A bar chart whose axis begins at 90 rather than 0 can make a tiny difference look enormous.
Key Words
Tap a word to see its definition.
Steps
Read the explanation above and note the two key terms before you start.
Given the same data plotted twice — once from zero and once from a truncated axis — write down what each version makes you believe. Then redraw the honest version and state the real difference as a percentage.
Record what actually happened, including anything that did not match what you expected.
Write a conclusion that answers the question this lesson opened with, and state your uncertainty.
Check Your Understanding
Question 1
1 of 2A bar chart whose y-axis starts at 90 instead of 0 tends to:
Where you see this in real life
This shows up in your everyday life more than you'd think.
Stretch Challenge
Try this in real life this week.
Try one experiment in real life this week — even a tiny one.
For the dinner table
“What's the most surprising thing you learned today?”
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.
Ready?
Reading Someone Else's Data
Learn the rule. Then catch nature using it.
Full screen — no distractions
Checkout complete lesson on Data and Evidence for 5th Grade
Get the full Data and Evidence track as a printable PDF — all lessons, worksheets, and answer keys.