What is a variable?
A variable is something that can change in in an investigation
What are the different types of variable?
Independent variable (IV). = what i change
Dependent variable (DV) = what i measure
Control variable (CV). = what i keep the same
For example
Investigation = does light affect plant growth?
Independent variable = light
Dependent variable = plant growth
Control variable = soil, water, temperature, time
What is the independent variable?
What you change
What is the dependant variable?
What you measure
What is the control variable?
What you keep the same