1. Due Today: Bar GraFun & Line GraFun Worksheets
Tuesday– August 16th
DAILY AGENDA
REQUIRED MATERIALS
Start of Class Routine
Review Bellwork
Variables Notes & Activity
Variable Practice Worksheet
Science Binder
Pencil/Eraser
Whiteboard Eraser
Dry Erase Marker
Whiteboard
Due Today: Bar GraFun & Line GraFun Worksheets

2. What is a Variable?

3. Variables in Science Experiments
Variable: any factor, trait, or condition that can exist in differing amounts or types.

4. Variables in Science Experiments
An experiment usually has three kinds of variables:
Independent
Dependent
Controlled

5. The one factor that is changed by the person doing the experiment
Types of Variables
Independent Variable
The one factor that is changed by the person doing the experiment
What is tested by the scientist
What is changed by the scientist

6. The factor which is measured in the experiment
Types of Variables
Dependent Variable
The factor which is measured in the experiment
What is observed/measured – the data
The effect caused by the independent variable.

7. All the factors that stay the same in an experiment
Types of Variables
Control
All the factors that stay the same in an experiment
Things that could change but don’t
Kept the same by scientists
These allow for a fair test

9. Can you identify the variables?

10. What is the independent variable?
Students of different ages were given the same jigsaw puzzle to put together. They were timed to see how long it took to finish the puzzle.
What is the independent variable?
Same Jigsaw Puzzle
Different Ages
Time it took to put the puzzle together.

11. What is the independent variable?
Students of different ages were given the same jigsaw puzzle to put together. They were timed to see how long it took to finish the puzzle.
What is the independent variable?

12. What is the dependent variable?
Students of different ages were given the same jigsaw puzzle to put together. They were timed to see how long it took to finish the puzzle.
What is the dependent variable?
Same Jigsaw Puzzle
Different Ages
Time it took to put the puzzle together.

13. What is the dependent variable?
Students of different ages were given the same jigsaw puzzle to put together. They were timed to see how long it took to finish the puzzle.
What is the dependent variable?

14. What is the controlled variable?
Students of different ages were given the same jigsaw puzzle to put together. They were timed to see how long it took to finish the puzzle.
What is the controlled variable?
Same Jigsaw Puzzle
Different Ages
Time it took to put the puzzle together.

15. What is the controlled variable?
Students of different ages were given the same jigsaw puzzle to put together. They were timed to see how long it took to finish the puzzle.
What is the controlled variable?

17. I think I can! I think I can!

18. What is the independent variable?
The higher the temperature of water, the faster an egg will boil.
What is the independent variable?
Temperature of water
Time it takes to boil
Egg

19. What is the dependent variable?
The higher the temperature of water, the faster an egg will boil.
What is the dependent variable?
Temperature of water
Time it takes to boil
Egg

20. What is the controlled variable?
The higher the temperature of water, the faster an egg will boil.
What is the controlled variable?
Temperature of water
Time it takes to boil
Egg

21. Why ONLY change the independent variable?
If you measure a change in the dependent variable, you won’t know which variable is causing the change.

22. You’re doing GREAT!

23. What is the independent variable?

24. What is the dependent variable?

25. What is the controlled variable?

26. Variables in Graphs

27. Variable Practice Worksheet
Homework:
Variable Practice Worksheet