Post on 26-Mar-2015
Catalyst – August 52, 2009
What are the FOUR characteristics of a good procedure?
UNIT 1 QUIZ RESCHEDULED TO THURSDAY!!!!
Front Door
Projector2nd Period
Group 3
Katty,Isaiah,
Nicolette, Robin
Group 2
Darren, Whitnie,
Isaac
Group 1
Neron, Tre, Denny,
Chelsea J.
Group 6
Jared, Brittanee, T’Keyah, Reshad
Group 4
Keith, Jessica, Arethia, Sidne
Group 9Group 8 Group 7
Kerrie, Jenny, Joseph, Corian
Group 5
Dorian, Elesha,
Chelsea C., Chevalius
Front Door
Projector4th Period
Group 3
Tashica, James,
Kennesha, Seandell
Group 2
Chelsea, Duan,
Victoria, Shant’a
Group 1
Brittanny V., Brandon, Katelynn, Queirra
Group 6
Darionne, Jordan J., Dajaelle,
Kathy
Group 5
Frank, Amanda,
Kevin, Brittany P.
Group 4
Phillip, Jordan T., Keyera,
Fatina
Group 9
Kawanna, Davida, Cole
Group 8
Brett, Stephanie,
Tia, De’Jonnaie
Group 7
Antrashion, Jayde, Lee
Honors Catalyst – August 52, 2009 What are the FOUR characteristics
of a good procedure? What should our GLE mastery goal
be? (We still haven’t decided!)
UNIT 1 QUIZ RESCHEDULED TO THURSDAY!!!!
Front DoorProjector3rd Period
Group 3
Jessie, Jeremy, Devone, Tonisha
Group 2
Emanuel, Jalen,
Antoinette, James
Group 1
Willie, Justin, Thien,
Michael
Group 6Group 5
Jonas, Sean, Bridget, Christan
Group 4
William, Jonathon,
Maya, David
Group 9Group 8 Group 7
Today’s Agenda
Catalyst Finish procedure for Mystery Goo (5
min) How to work in Ms. Stroh’s lab Make Mystery Goo! What is an independent and
dependent variable? Foldable Time! Progress Reports Exit Question
Today’s Objectives
SWBAT plan a step-by-step procedure for making Mystery Goo.
SWBAT identify independent and dependent variables in a controlled experiment.
Available Materials
Corn starch Water Graduated
cylinder Beaker Cup
Spatula Measuring cup Gloves Apron Goggles
Can you think of anything else you might need?
Mystery goo! (30 minutes)
Gather materials for your experiment.
Talk over the procedure with your group before you begin.
Clean up Beakers must be washed thoroughly.
Place them upside down on the paper towels.
Wipe down your desks and floors.
Mystery Goo Hypotheses
Let’s talk about the goo some more.
What would have happened if we added more water? How would you test it?
What would have happened if we added more corn starch? How would you test it?
Experimentation
Key Point #1: A proper experiment always has an
independent variable, dependent variable, and control group.
Scientists will change one thing and measure something else.If Mr. Jhaveri wears his basketball shoes, then he will score more points in a game.
Variables
Independent Variable: The thing that I change Basketball Shoes
Dependent variable: The thing that is measured Points
*Remember variables are always nouns!!
Good experiments…
ONLY CHANGE 1 THING!! You must keep everything else constant,
or your data may not be valid! Control Group: The group without the
independent variable. What was the control group in the
basketball experiment?
IMPORTANT!!!
Practice
Do older microwaves give off more radiation? What is the independent variable?
IV =
DV =
Microwave Age
Radiation
Practice
Are there more love bugs in the summer or the winter months? What is the dependent variable?
IV =
DV =
Season
Amount of love bugs
Practice
Students of different ages were given the same puzzle to assemble. The puzzle assembly time was measured.
IV =
DV =
Age
Puzzle Assembly Time
If there are more students, then there will be more school
buses.
IV =
DV =
Amount of students
Number of school buses
If the cost of beignets increases, then fewer will be sold.
What depends on what?
IV =
DV =
Cost of Beignets
Amount of Beignets sold
IV = Number of free agents
DV = Games Won
If the Saints sign more free agents, then they will win more games.
Foldables!
First flap: Real-life scenario in hypothesis form
Second Flap: Define and identify independent variable
Third Flap: Define and identify dependent variable
Fourth Flap: Define and identify control group
Foldables!
First flap: If I use more minutes, then my cell phone bill will increase.
Second Flap: DEFN, IV: number of minutes I use
Third Flap: DEFN, DV: amount of my cell phone bill
Fourth Flap: DEFN, Control group: number of minutes I usually use
Exit Question
Identify the independent variable, dependent variable, and control group in the following scenario.
Dr. Ayaad believes that eating artichokes can decrease cholesterol. Dr. Ayaad recruited two sets of patients of equal age and health and she gave one group a normal diet and another an artichoke-filled diet. She then measured the patient’s cholesterol 2 weeks later.