Manipulated and Responding Variables - PowerPoint Presentation

Slide1

Manipulated and Responding VariablesSlide2

Congratulations! You found the presentation!

I hope that you are behaving and having a wonderful day!

By the end of this PowerPoint you will be a PRO at manipulated and responding variables!

Woohoo

!

To become a pro, follow along the PowerPoint with your notes, filling in when needed. Its that easy!

If you work hard to understand the problems and think deeply like a 4

th

grader, you will have no problem with this! If you act like a 2

nd

grader and just click through the slides being silly, you WILL be confused! The type of student that you are is YOUR choice!Slide3

Turn to the page that says “Scientific Variables” at the top. You will fill this out first.

It looks like this!

Slide4

Manipulated and Responding Variable

Think of the manipulated and responding variable as something similar to cause and effect: the manipulated variable is the cause and the responding variable is the effect. Keep that in mind!Slide5

Variables

There are 2 main types of variables:

Manipulated Variable

: The variable that is changed by the scientist; the ‘

I control

’ variable

Responding Variable

: The variable that might change because of what the scientist changes – what is being measured Slide6

Variables

There are 2 main types of variables:

Manipulated Variable

: The variable that is changed by the scientist; the ‘

I control

’

variable

The MV (manipulated variable) is what you do!

Responding Variable

: The variable that might change because of what the scientist changes – what is being measured

The RV (responding variable) is what happens.Slide7

Lets give it a try:

I scared my brother, and he screamed

.

What did YOU do?Slide8

Lets give it a try:

I scared my brother, and he screamed

.

What did YOU do? YOU scared your brother.

So, what happened because of your action?Slide9

Lets give it a try:

I scared my brother, and he screamed

.

What did YOU do? YOU scared your brother.

So, what happened because of your action? Your brother screamed.Slide10

Lets give it a try:

I scared my brother, and he screamed

.

This is the manipulated variable. You controlled or manipulated what happened:

I scared my brother.

This is the responding variable. This happened in response to what you did.

My brother screamed.Slide11

Ready for another one?Slide12

I was so tired, I overslept.

What did you control?

What happened because of that?Slide13

I was so tired, I overslept.

What did you control?

You controlled how tired you were.

What happened because of that?

Because of how tired you were, you overslept.Slide14

I was so tired, I overslept.

What did you control? You controlled how tired you were.

Manipulated variable: How tired I was

What happened because of that? Because of how tired you were, you overslept.

Responding variable: I overslept.

Cause: I was tired Effect: I overslept.Slide15

Ready for another one?Slide16

I played video games instead of studying for my science test, so I failed.

What did you control or manipulate?

What happened because of that?Slide17

I played video games instead of studying for my science test, so I failed.

What did you control or manipulate?

You controlled not studying.

What happened because of that?

You failed.Slide18

I played video games instead of studying for my science test, so I failed.

What did you control or manipulate? You controlled not studying.

Manipulated Variable: I played video games instead of studying.

What happened because of that? You failed.

Responding Variable: I failed by test.Slide19

Give this to your sub. I will check it and have you glue it back in!Slide20

Now try the worksheet that says “Manipulated

and Responding Variable

Practice” at the top

 It looks like thisSlide21

You need to do the worksheet on your own, but click through the slides for some extra helpSlide22

Plant Example

You want to find out how light affects plant growth. Every day you measure the plant to see how much it has grown.

Manipulated Variable:

What is controlled or manipulated here? What acts on its own without you doing anything to it?

Responding Variable:

What happened because of the manipulated variable?Slide23

Plant Example

You want to find out how light affects plant growth. Every day you measure the plant to see how much it has grown.

Manipulated Variable:

What is controlled or manipulated here? What acts on its own without you doing anything to it?

The amount of sunlight is the manipulated variable.

Responding Variable:

What happened because of the manipulated variable?

The plant growth is the responding variable.Slide24

Electromagnet Example

An investigation was done with an electromagnetic system made from a battery and wire wrapped around a nail.

The

number of paper clips the electromagnet could pick up was measured.

Manipulated Variable:

What is controlled or manipulated here? What acts on its own without you doing anything to it?

Responding Variable:

What happened because of the manipulated variable?Slide25

Egg Example

The higher the temperature of water, the faster an egg will boil.

Manipulated Variable:

What is controlled or manipulated here? What acts on its own without you doing anything to it?

Responding Variable:

What happened because of the manipulated variable?Slide26

Depth Example

The temperature of water was measured at different depths of a pond. (depth= how deep a pond is).

Manipulated Variable:

What is controlled or manipulated here? What acts on its own without you doing anything to it?

Responding Variable:

What happened because of the manipulated variable?Slide27

When you finish your sheet, put your name on the sheet and turn it into the substitute. The sub will give you further directions. We will go over this tomorrow!