x mL 80 o F Aim: How can we talk about good experiments? Do Now: Is this a good experiment? x mL 75 o F x mL 85 o F Group 1Group 2Group 3
x mL 80 o F Which one is the control group? x mL 75 o F x mL 85 o F Group 1Group 2Group 3
x mL 80 o F Which one is the control group? x mL 75 o F x mL 85 o F Group 1 Group 2Group 3
Which one is the control group? Group 1Group 2 Group 3Group 4 x o F 250 mg
Which one is the control group? Group 1Group 2 Group 3 x o F 250 mg Group 4
Independent Variable The independent variable is the difference between the groups
x mL 80 o F What is the independent variable? x mL 75 o F x mL 85 o F Group 1Group 2Group 3 the temperature
x mL 80 o F What is the independent variable? x mL 75 o F x mL 85 o F Group 1Group 2Group 3 the temperature
What is the independent variable? Group 1Group 2 Group 3Group 4 x o F 250 mg the kind of medicine taken
What is the independent variable? Group 1Group 2 Group 3Group 4 x o F 250 mg the kind of medicine taken
What is the independent variable? Group 1 Group 2 x100 1 hour the amount of exercise
What is the independent variable? Group 1 Group 2 x100 1 hour the amount of exercise
What is the independent variable? Group 1 Group 2 x85 the light color
What is the independent variable? Group 1 Group 2 x85 the light color
What is the independent variable? Group 1 Group 2 x100 the kind of food
What is the independent variable? Group 1 Group 2 x100 the kind of food
What is the independent variable? Group 1 Group 2 x1000 the amount of coffee
What is the independent variable? Group 1 Group 2 x1000 the amount of coffee
What is the independent variable? Group 1 Group 2 x200 the kind of dog food
What is the independent variable? Group 1 Group 2 x200 the kind of dog food
What is the independent variable? x800 Group 1Group 2 Group 3Group 4 the kind of dinner
What is the independent variable? x800 Group 1Group 2 Group 3Group 4 the kind of dinner
(Independent Variable Worksheet)
Dependent Variable The dependent variable is the thing that the scientist measures
x mL 80 o F What is the dependent variable? x mL 75 o F x mL 85 o F Group 1Group 2Group 3 the number of dead fish
x mL 80 o F What is the dependent variable? x mL 75 o F x mL 85 o F Group 1Group 2Group 3 the number of dead fish
What is the dependent variable? Group 1Group 2 Group 3Group 4 x o F 250 mg the decrease in temperature
What is the dependent variable? Group 1Group 2 Group 3Group 4 x o F 250 mg the decrease in temperature
What is the dependent variable? Group 1 Group 2 x100 1 hour the rabbits’ weight
What is the dependent variable? Group 1 Group 2 x100 1 hour the rabbits’ weight
What is the dependent variable? Group 1 Group 2 x85 the plants’ height
What is the dependent variable? Group 1 Group 2 x85 the plants’ height
What is the dependent variable? Group 1 Group 2 x100 the students’ test scores
What is the dependent variable? Group 1 Group 2 x100 the students’ test scores
What is the dependent variable? Group 1 Group 2 x1000 the number of car accidents
What is the dependent variable? Group 1 Group 2 x1000 the number of car accidents
What is the dependent variable? Group 1 Group 2 x200 the dogs’ lifespan
What is the dependent variable? Group 1 Group 2 x200 the dogs’ lifespan
What is the dependent variable? x800 Group 1Group 2 Group 3Group 4 the children’s weight
What is the dependent variable? x800 Group 1Group 2 Group 3Group 4 the children’s weight
(Dependent Variable Worksheet)
Constant Something that is the same in all the groups is constant.
x mL 80 o F Name one thing that is constant in this experiment. x mL 75 o F x mL 85 o F Group 1Group 2Group 3
Name one thing that is constant in this experiment. Group 1Group 2 Group 3Group 4 x o F 250 mg
Name one thing that is constant in this experiment. Group 1 Group 2 x100 1 hour
Name one thing that is constant in this experiment. Group 1 Group 2 x85
Name one thing that should be kept constant in this experiment. Group 1 Group 2 x100
Name one thing that is constant in this experiment. Group 1 Group 2 x1000
Name one thing that is constant in this experiment. Group 1 Group 2 x200
Name one thing that should be kept constant in this experiment. x800 Group 1Group 2 Group 3Group 4
(Constant Worksheet)