pg. 10 Write: STARTER (and give your answer, do not write the prompt)

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pg. 10 Write STARTER (and give your answer, do
not write the prompt)

• Scientists are split between whether or not
  contacts help protect the eye more in the event
  of a lab accident. Using COMPLETE SENTENCES,
  give your opinion on this matter

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Table of Contents
Date Lecture/ Activity/ Lab
Page Grade
Safety Contract
8/28
5
Plan for Success
8/28
6-7
Types of Graphs
8/28
8
Lab Equipment Notes
8/29
9
10
8/30
Starter/Exit
11
8/30
Experimental Design Notes
3
Title page 11
Experimental Design Notes
4
A variable is something that changes. note
only 1 variable should be tested per experiment
5
6 concepts of experimental design
independent variable
dependent variable
constants
control group
experimental group
repeated trials
6
constants
all factors which are NOT allowed to change
during the experiment
7
control group
the group (standard) to which everything is
compared nothing different or special is done to
this group
8
experimental group
the group(s) being tested with the independent
variable
Each test group has only ONE FACTOR different
from the other test groupsthe independent
variable.
9
repeated trials
The more times you repeat the experiment, the
more VALID your results are
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Hypothesis V Chart
Independent Variable
Dependent Variable
verb
verb
If independent variable verb,
then dependent variable verb.
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independent variable
the variable that is changed on purpose by
the experimenter
You have complete control over this
This is the if part of a hypothesis.
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independent variable
M.I.X.
Manipulated by you Independent Variable is one
you control X-axis of the graph is where you
put this info
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dependent variable
the variable that responds
this is your data
This is the then part of a hypothesis.
14
dependent variable
D.R.Y.
Dependent Responding variable Y-axis of
a graph is where you put this info
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Once you decide what you want to test, you must
determine how to manage everything else.
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is used to design an experiment.
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iv
dv
constants
fertilizer
The variable (factor) that you will change is the
independent variable.
0 drops
2 drops
4 drops
6 drops
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iv
dv
constants
fertilizer
plant growth
0 drops
2 drops
4 drops
6 drops
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iv
dv
constants
amt. of water
fertilizer
plant growth
type of soil
0 drops
These are the factors that must NOT change during
experimentation. They must remain constant.
amt. of soil
2 drops
type of plant
4 drops
type of planter
6 drops
size of planter
type of light
location
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6 drops fertilizer
4 drops fertilizer
2 drops fertilizer
no fertilizer
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What is this called?
What are these called?
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What are these called?
CONSTANTS
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What is this called?
The plant growth that you observe here can be
called . . .
? the results (of adding fertilizer)
? the response (to adding fertilizer)
dependent variable
? the effects (of adding fertilizer)
0
2
4
6
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What do you do if you want to test the type of
soil instead of fertilizer?
type of soil
fertilizer
Fertilizer becomes a constant.
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EXIT

• Write your own hypothesis and create a sample IV
  C DV chart like the one in your notes.
• Questions?? Just ask )