1. IGCSE Exam Tips

2. CORMS
Compare. What are you comparing in the experiment ? Location / distance / rate / light intensity / temperatures
Organism. what are you going to study? species / gender / size / age / breed / health
Repeat. three times

3. Measure. What are you going to measure?
mass / length / count number / collect gas STATE THE TIME PERIOD ( seconds / minutes / hours / days)
Same. All the things you must keep the same.
Specified concentrations: mass / volume / times / age / gender

4. Slap u scale linear and half the graph paper used
lines Neat and through the points (ruler)

5. Axes the correct way round and labelled
Points correctly plotted
Units (ml) / (°c) / (S) / (g) etc

6. The thing you are measuring / recording
dependent variable:
The thing you are measuring / recording

7. Independent variable: The thing you are changing

8. Independent variable: is the first (left hand) column in a table
Goes on the X-axis
is the first (left hand) column in a table

9. dependent variable:
Goes on the y-axis

10. To make an experiment more accurate you change the measuring equipment to get closer to the true value

11. To make an experiment more
reliable repeat 3 times

12. Increase the Temperature
More kinetic energy
More collisions
More enzyme activity
More respiration / photosynthesis