Lesson 6 of 8 · Lab Skills
Lesson⭐ 30 XPGraphs: Lines of Best Fit and Gradients
Lab Skills.
🎯 Your mission
Master the concept. Use it tomorrow.
⚡ 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
Plot the independent variable on the x-axis and the dependent on the y-axis, scale both to fill the grid, and draw a single smooth line of best fit rather than joining dots. The gradient often is the physical quantity you actually wanted.
Key Words
Tap a word to see its definition.
Steps
Read the explanation above and note the two key terms before you start.
Plot a supplied force-extension data set on paper, draw the line of best fit, and calculate the gradient using a triangle spanning at least half the line. State what the gradient represents and give its unit.
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 line of best fit should:
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.
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Send it to a parent who's looking for a 10-minute kitchen science win.
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Graphs: Lines of Best Fit and Gradients
Master the concept. Use it tomorrow.
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