Pg. 10 Write: STARTER (and give your answer, do not write the prompt) Scientists are split between...

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

Table of ContentsDate Lecture/ Activity/ Lab Page Grade

8/28 Safety Contract 58/28 Plan for Success 6-7

8/28 Types of Graphs 8

8/29 Lab Equipment Notes 9

8/30 Starter/Exit 10

8/30 Experimental Design Notes 11

Title page 11:

A variable is something that changes.

*note: only 1 variable should be tested per

experiment**

A variable is something that changes.

*note: only 1 variable should be tested per

experiment**

6 concepts of experimental design

6 concepts of experimental design

independent variableindependent variable

dependent variabledependent variable

constants

control groupcontrol group

experimental group

repeated trialsrepeated trials

constants

all factors which are NOT allowed to change during the

experiment

all factors which are NOT allowed to change during the

experiment

control groupcontrol group

the group (standard)(standard) to which everything is compared

nothing different or special is done to this group

the group (standard)(standard) to which everything is compared

nothing different or special is done to this group

experimental groupexperimental group

the group(s) being tested with the independent

variable

the group(s) being tested with the independent

variable

Each test group has only ONE Each test group has only ONE FACTOR different from the other FACTOR different from the other

test groups:the test groups:the iindependent ndependent vvariable.ariable.

Each test group has only ONE Each test group has only ONE FACTOR different from the other FACTOR different from the other

test groups:the test groups:the iindependent ndependent vvariable.ariable.

repeated trialsrepeated trials

The more times you repeat the experiment, the more VALID

your results are

The more times you repeat the experiment, the more VALID

your results are

hypothesishypothesishypothesishypothesis

Independent Variable

Dependent Variable+

verb+ v

erb

If independent variable + verb,

then dependent variable + verb.

Hypothesis V ChartHypothesis V Chart

independent variable

the variable that is changed on purpose by the

experimenter

the variable that is changed on purpose by the

experimenter

You have complete control over this

You have complete control over this

This is the ‘’if” part of a hypothesis.

This is the ‘’if” part of a hypothesis.

independent variable

Manipulated by you

Independent Variable is one you control

X-axis of the graph is where you put this info

Manipulated by you

Independent Variable is one you control

X-axis of the graph is where you put this info

M.I.X.

dependent variable

the variable that respondsthe variable that responds

this is your datathis is your data

This is the ‘’then” part of a hypothesis.

This is the ‘’then” part of a hypothesis.

dependent variable

D.R.Y.D.R.Y.

Dependent Responding variable

Y-axis of a graph is where you put this info

Dependent Responding variable

Y-axis of a graph is where you put this info

is used to design an experiment.

IVCDVIVCDVThe chart

iviv dvdvconstants

constants

fertilizefertilizerrfertilizefertilizerr The variable (factor) The variable (factor)

that you will change is that you will change is the the iindependent ndependent vvariable.ariable.

0 drops0 drops0 drops0 drops




iviv dvdvconstants

constants

plant growthplant growthplant growthplant growthfertilizefertilizerrfertilizefertilizerr0 drops0 drops0 drops0 drops




iviv dvdvconstants

constants

plant growthplant growthplant growthplant growthfertilizefertilizerrfertilizefertilizerr

amt. of amt. of waterwateramt. of amt. of waterwatertype of soiltype of soiltype of soiltype of soil

type oftype of plantplanttype oftype of plantplant

type oftype of planterplantertype oftype of planterplantersize of size of planterplantersize of size of planterplanter

amt. of soilamt. of soilamt. of soilamt. of soil

type of lighttype of lighttype of lighttype of light

locationlocationlocationlocation





These are the factors that These are the factors that

must must NOTNOT change during change during

experimentation. They must experimentation. They must

remain remain constantconstant. .

These are the factors that These are the factors that

must must NOTNOT change during change during

experimentation. They must experimentation. They must

remain remain constantconstant. .

no fe

rtili

zer

no fe

rtili

zer

2 dr

ops

fertili

zer

2 dr

ops

fertili

zer

4 dr

ops fe

rtili

zer

4 dr

ops fe

rtili

zer

6 dr

ops fe

rtili

zer

6 dr

ops fe

rtili

zer

no fe

rtili

zer

no fe

rtili

zer

2 dr

ops

fertili

zer

2 dr

ops

fertili

zer

4 dr

ops fe

rtili

zer

4 dr

ops fe

rtili

zer

6 dr

ops fe

rtili

zer

6 dr

ops fe

rtili

zerWhat is this called?What is this called?

CONTR

OL

What are these called?What are these called?

EXPER

IMEN

TAL

GROUP

EXPER

IMEN

TAL

GROUP

What are these called?What are these called?

CONSTANTS

CONSTANTS

00 22 44 66

What is this called?What is this called?

The plant growth that you observe here can be called . . .

The plant growth that you observe here can be called . . . the results (of adding fertilizer) the results (of adding fertilizer) the response (to adding fertilizer) the response (to adding fertilizer) the effects (of adding fertilizer) the effects (of adding fertilizer)

dependent

dependent

variable

variable

What do you do if you want to test the type of soil instead of

fertilizer?

What do you do if you want to test the type of soil instead of

fertilizer? iviv dvdvconstantsconstants

plant plant growthgrowthplant plant growthgrowth

fertilizerfertilizerfertilizerfertilizer amt. of wateramt. of wateramt. of wateramt. of water

type oftype of plantplanttype oftype of plantplant

type oftype of planterplantertype oftype of planterplantersize of plantersize of plantersize of plantersize of planter

amt. of soilamt. of soilamt. of soilamt. of soil

type of lighttype of lighttype of lighttype of light

locationlocationlocationlocation

type of soiltype of soiltype of soiltype of soil

type of type of soilsoiltype of type of soilsoil

Type of soil becomes the IV.

Fertilizer becomes a constant.

fertilizerfertilizerfertilizerfertilizer

EXIT:

Write your own hypothesis and create a sample IV C DV chart like the one in your notes.

Questions?? Just ask :)

Pg. 10 Write: STARTER (and give your answer, do not write the prompt) Scientists are split between...

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