Instructions:A) On a clean sheet of paper, write your heading in the top/right corner (First/Last name, then the date, and then the class period.)

B) Number your paper from 1 to 10

C) Go get a copy of today's bell work assignment from the table in the front of the room. PLEASE DO NOT WRITE ON THIS DOCUMENT

D) Read each question carefully, and select the best answer.

E) With a capital letter, write each answer on your own paper.

F) When you are finished, way silently for further instructions

BellWork

SPI 0807.Inq.1 (Variables and Controls)

Aug 21, 2013Press the Right Arrow Button to Advance through the Presentation!

Today’s Plan

1) Discuss objective(s), bell work, and birthdays.

2) Explain how to use the CPS clickers

3) Continue collecting duct tape/giving out text books

4) Give out Jupiter grade book passwords

5) View and discuss PP notes presentation about controls

6) (Time Permitting) Watch video clip (song) about variables

Link: Variable Video Song

Copy this into your agenda!

Get school supplies!

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SPI 0807.Inq.1 (Variables and Controls)

Today’s Plan

Silly Thought 03 All here who believe in telekinesis…

…raise my hand now!

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SPI 0807.Inq.1 (Variables and Controls)

Notes SPI 0807.Inq.1 (Variables and Controls)

Variables and Controls in Experiments Both of these are key parts of the scientific method

Scientific Method(In Flow Chart Format)

Use variables and controls when you test your hypothesis by doing experiments

Experiments!

Main Experiment Your main experiment will include…

The purpose of this experiment is to measure ONE key thing in multiple trials

Control ExperimentAn experiment to verify the results of your main experiment using the same conditions except for one factor or variable

Notes SPI 0807.Inq.1 (Variables and Controls)

Two Types of Experiments(1) Main Experiment(2) Control Experiment

independent variables, dependent variables, and constants

Sometimes called experimental group

Sometimes called control group

What Are Control Experiments?

An experiment to verify the results of another experiment using the same conditions except for one factor or variable

An experiment separated from the main experiment where the independent variable being tested cannot influence the results.

Simply remove the independent variable entirely or replace it with a neutral independent variable.

Notes SPI 0807.Inq.1 (Variables and Controls)

Also called control groups

Example 01:A student conducts an experiment to determine which type ofglue works best for attaching two pieces of paper together.

Experimental Group Uses 3 types of Elmer’s glue in a series of experiments (Liquid-washable, Glue Stick-washable, Glue Stick-nonwashable) She places the same amount of glue (2g) on each sheet of paper

Control Group Uses one types of super glue in a series of experiments She places the same amount of super glue (2g) on each sheet

Review SPI 0807.Inq.1Controls and Variables

What Are Control Experiments? An experiment to verify the results of another experiment using the same conditions except for one factor or variable Simply remove the independent variable entirely or replace

it with a neutral independent variable.

Experimental group All the details of the series of experiments using the 3similar types of Elmer’s glue

Control group All the details of the super glue series of experiments

SPI 0807.Inq.1Variables and ControlsNotes

NOTE: The super glue is the control variable!

Example 02: A student conducts an experiment to determine which type ofballpoint writing pen will last the longest before running out of ink. Experimental Group Uses 3 types of ink pens in a series of experiments

(Blue ink pen, Black ink pen, red ink pen) He copies text from his science book. He copies the same text over and over. He writes at the same speed. The room temperature remains the same. He writes on the same kind of paper.

Control Group Uses 3 types of non-ballpoint pens in a series of experiments Uses the same constants as the experimental group

SPI 0807.Inq.1Variables and ControlsReview

What Are Control Experiments? An experiment to verify the results of another experiment using the same conditions except for one factor or variable Simply remove the independent variable entirely or replace

it with a neutral independent variable.

Experimental group All the details of the series of experiments using the 3types of ballpoint pens

Control group All the details of the 3 non-ballpoint pens

NOTE: The non-ballpoint pens are the control variables!

SPI 0807.Inq.1Variables and ControlsNotes