Welcome back MinionsWarm up on the board…

Scientific Method – Controls & Variables

Last night you had to do a worksheet for homework.We shall go over the answers…

Homework…• Control – • A group within an experiment that is not changed or experimented on.

• Variable – • The factor that can change in an experiment.

• Independent Variable – (aka: manipulated variable)• The factor a scientist changes during an experiment

• Dependent Variable – (aka: responding variable)• A factor that changes in an experiment as a result of the independent variable

Scenario 1 (Krusty Krab’s Breath Mints)• 1) 50 customers in Group B• 2) Breath Mint• 3) Customer’s Breath• 4) His breath mint works a

majority of the time.• 5) What do you think?

Scenario 2 (SpongeBob Clean Pants)• 6) Will the Clean-O detergent

clean his pants.• 7) Detergent• 8) Cleanliness of his pants• 9) Detergent does not work as

well as plain water

Scenario 3 (Squidward’s Symphony)• 10) Instruments played• 11) Jellyfish attracted• 12) What do you think?• 13) What do you think?

Scenario 4 (Super Bubbles)• 14) It produces bubbles twice as big as

bubbles from regular bubble soap.• 15) Bubble soap• 16) Size of the bubbles• 17a) • Super bubbles: 151 / 10 = 15.1• Regular bubbles: 115 / 10 = 11.5

• 17b) What do you think?• 18) What do you think?

Homework• Handout sheet for lab safety• Take home, read it thoroughly, secure it in your science notebook.

• Draw me a picture tonight of one of the rules• Use a page in your science notebook.

• Color please.

• Study your vocabulary• Quiz tomorrow!!!