Table and line graph
Turn your raw numbers into a table and a graph so the pattern jumps out. Use a line graph for continuous data like length (a bar graph is for separate categories).
1. Record your results in this clear, titled table.
| Foil length (cm) | Brightness (0-3) |
|---|---|
| 10 cm | |
| 20 cm | |
| 30 cm | |
| 40 cm |
2. Draw a line graph of your results. Put what you changed (foil length) on the bottom axis and what you measured (brightness) up the side. Title both axes and use an even scale.
Evaluate your investigation
A graph isn't the end — scientists evaluate: did it work, and was it fair?
Evaluate your investigation.
| Evaluation question | My answer |
|---|---|
| Did my result match my prediction? | |
| Was the test fair? What slipped? | |
| One change to make it fairer or clearer |
Exit ticket: name one way to make the investigation fairer next time, and explain why it would help.