Your SlideShare is downloading. ×
0
Unit 1 Test Review
Conducting Experiments
A Good Experiment
• Tests one variable at a time. If more than one
thing is tested at a time, it won’t be clear
which vari...
Variables
• A variable is anything in an experiment that
can change or vary.
• It is any factor that can have an effect on...
3 Kinds of Variables
Independent Variable (IV)
– something that is intentionally changed by
the scientist
– What is tested...
3 Kinds of Variables
Independent Variable (IV)
To determine the independent variable, ask yourself:
“What is being changed...
3 Kinds of Variables
Dependent Variable (DV)
– something that might be affected by the
change in the independent variable
...
3 Kinds of Variables
Dependent Variable (DV)
To determine the dependent variable, ask yourself:
“What will I measure and o...
3 Kinds of Variables
Standardized Variable (SV)
– a variable that is not changed and kept
the same
– Also called constants...
3 Kinds of Variables
Standardized Variable (SV)
To determine the controlled variables, ask yourself:
“What should not be a...
Observations
• Observations must be taken in with one of the
five senses
– Touch
– Sight
– Taste
– Sense
– Smell
Inferences
• Inferences take observations and then draw
conclusions about them
Black Like Me (1961)
The foundation of the experiment
• The development of a hypothesis is the first step in
designing and conducting an experi...
Hypothesis Format
• If the (independent variable) is (describe
change)
• Then the (dependent variable) will (describe
chan...
Experiment title
• Like your hypothesis, you also use a specific format
on the title of your experiment
• Your title also ...
The title of your experiment…
• Is written in the following format:
• “The Effect of (Independent Variable) on the
(Depend...
10-1-13 Unit 1 Review
10-1-13 Unit 1 Review
Upcoming SlideShare
Loading in...5
×

10-1-13 Unit 1 Review

900

Published on

Published in: Technology, Health & Medicine
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total Views
900
On Slideshare
0
From Embeds
0
Number of Embeds
1
Actions
Shares
0
Downloads
6
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Transcript of "10-1-13 Unit 1 Review"

  1. 1. Unit 1 Test Review Conducting Experiments
  2. 2. A Good Experiment • Tests one variable at a time. If more than one thing is tested at a time, it won’t be clear which variable caused the end result. • Must be fair and unbiased. This means that the experimenter must not allow his or her opinions to influence the experiment. • Does not allow any outside factors to affect the outcome of the experiment.
  3. 3. Variables • A variable is anything in an experiment that can change or vary. • It is any factor that can have an effect on the outcome of the experiment. • There are three main types of variables.
  4. 4. 3 Kinds of Variables Independent Variable (IV) – something that is intentionally changed by the scientist – What is tested – What is manipulated – Also called a “Manipulated Variable” – You can only change ONE variable in an experiment!!!
  5. 5. 3 Kinds of Variables Independent Variable (IV) To determine the independent variable, ask yourself: “What is being changed?” Finish this sentence… “I will change the _____________”
  6. 6. 3 Kinds of Variables Dependent Variable (DV) – something that might be affected by the change in the independent variable – What is observed and measured – The data collected during the investigation – Also called a “Responding Variable”
  7. 7. 3 Kinds of Variables Dependent Variable (DV) To determine the dependent variable, ask yourself: “What will I measure and observe?” Finish this sentence… “I will measure and observe ________________”
  8. 8. 3 Kinds of Variables Standardized Variable (SV) – a variable that is not changed and kept the same – Also called constants – Allows for a “fair test” – NOT the same as a “control”!! – Any given experiment will have many controlled variables
  9. 9. 3 Kinds of Variables Standardized Variable (SV) To determine the controlled variables, ask yourself: “What should not be allowed to change?” Finish this sentence… “I will not allow the ______________ to change.”
  10. 10. Observations • Observations must be taken in with one of the five senses – Touch – Sight – Taste – Sense – Smell
  11. 11. Inferences • Inferences take observations and then draw conclusions about them
  12. 12. Black Like Me (1961)
  13. 13. The foundation of the experiment • The development of a hypothesis is the first step in designing and conducting an experiment. • The hypothesis should be: • clear, • specific, • and testable.
  14. 14. Hypothesis Format • If the (independent variable) is (describe change) • Then the (dependent variable) will (describe change)
  15. 15. Experiment title • Like your hypothesis, you also use a specific format on the title of your experiment • Your title also shows the relationship between the IV and DV
  16. 16. The title of your experiment… • Is written in the following format: • “The Effect of (Independent Variable) on the (Dependent Variable).” • Remember, in your experiment, you are looking to see if the IV has an effect on the DV
  1. A particular slide catching your eye?

    Clipping is a handy way to collect important slides you want to go back to later.

×