Required Practicals Paper 2

• reaction time

• field investigations

• plant responses (triple only)

• decay (triple only)

It is important for each of the required practicals you know the method very well and can identify the variables. You are likely to get longer 6 mark questions on the required practicals.

• Independent variable = what is changed in the practical

• dependent variable = what is measured in the practical 

• control variable  = what is kept the same in the practical