Think like a scientist
Use sensors, control variables, measure carefully and read the evidence.
Choose any question to begin.
- 1
How can a measurement guide a machine?
How does a heater know when to stop? Compare a heater using the measured temperature with one that always stays on. Watch the target and the on/off label.
Checkpoint answeredOpen this discovery → - 2
How can a comparison isolate one changed factor?
Is this a fair test of wheel size? The intended difference is wheel size. Check whether the ramps and masses also match before using the recorded result.
Checkpoint answeredOpen this discovery → - 3
How much can a ruler reading tell you?
Does sliding an object along a ruler change its length? Read the start and end, then subtract. Use the same object at zero and at a shifted start.
Checkpoint answeredOpen this discovery → - 4
What can repeated readings reveal?
Can close readings all be off target? Compare tightly grouped readings with a shifted tight group. Show the known reference before judging accuracy.
Checkpoint answeredOpen this discovery → - 5
Which claims does a graph actually support?
Can a graph look steeper without changing any data? Keep the same six points and change only the vertical-axis minimum. Check the numbers before judging the size of the change.
Checkpoint answeredOpen this discovery →
Each discovery includes all five reading levels. Journey progress reflects the checkpoints answered on this browser.