Measurement TOPIC:

1
Measurement TOPIC MY GOAL G.O.T. Get On
Task
Tues 8.21.12
Design an Experiment I will learn to design
perform an experiment

• JUST READ BELOW ? Things to remember
• How many variables should there be in an
  experiment?
• What is the Independent Variable? The Dependent
  Variable?
• What is the control group?

2
Procedure . AKA
What are we doin today?
3
Stop Think And Review
Key Terms!

1. Hypothesis
2. Independent Variable
3. Dependent Variable
4. Control Group
5. Experimental Group
6. Constants

4
Hypothesis

• Must be testable!
• If., Then statement
• IF the CAUSE
• THEN the EFFECT
• IF I use Martha Stewart Water (thats the CAUSE)
  , THEN my plants will grow 12 inches taller
  (thats the EFFECT)

5
Experimental Variables

• Independent Variable TEST
• controlled by experimenter

• Dependent Variable OUTCOME
  
• an action a verb it changes

CAUSE
EFFECT
Type of water
Growth of plant
6
Experimental Set up

• CONTROL GROUP
• NO changes- All conditions kept the same cont.
  as usual
• Baseline for comparison
• No action taken

• EXPERIMENTAL GROUP
• Change made called the test group- kept the
  same except for the ONE thing being tested
• Action taken

Cont. as normal with tap water
Change ONLY the water to Martha Stewart brand
7
Constants

• Are all things kept THE SAME in the experiment to
  make it RELIABLE.
• Examples
• IDENTICAL kind of plant
• SAME size of bowl
• EQUAL amounts of dirt
• SAME time of watering plants
• SAME kind of.

8
YOUR JOB TODAY

• Get in groups
• Get stuff out of bag
• Run your experiment ? Collect data
• Independent Variable CAUSE
• Dependent variable EFFECT
• Control Group normal used to compare exp.
  Group to
• Constants things that remain the same
• Simultaneously, work on poster (see board)
• Poster complete by tomorrow!

9
Stop Think And Reflect

• Did we reach our goal?
• To collaborate perform experiment
• Did you reach that goal?
• How do you know you reached the goal?
• What are YOU going to do if you did not reach
  that goal??

10
Check to see how much you rebmember

1. Independent Variable
2. Dependent Variable
3. Control Group
4. Experimental Group
5. Constants

• The variable you are TESTING! It is the CAUSE
  some kind of ACTION taken
• The Variable that is the RESULT of the testing
  It is the EFFECT of the cause
• The group that is NORMAL you do NOTHING to it
  It is use for COMPARISON
• The group that is EXPERIMENTED on Something
  HAPPENS to it
• THINGS that remain the SAME in both the control
  experimental groups!

11

• Get Course Req. signed.
• Get a MEAD 5 Star College Ruled, 8 ½ x 11
  Spiral NB (3 subject)
• Mr. Tager is selling NB for 1.50

EOCA End of Class Assignment
Be the change you wish to see in the world