Copy the schedule into your plannersMonday Sept 10th Tuesday/Wednesday

Sept 11th and 12th Thursday/Friday

Sept 13th and 14th Review IV and DV, Exit Slip on IV and DV

Homework: Scientific Questions and Variables HW (due tomorrow)

Notes on scientific questions and hypotheses, hypotheses stations

Notes on Qualitative and Quantitative, Tootsie Pop Lab, scientific method exit slip

If you have not handed in your safety contract, hand it in as soon as possible! We will have a lab THIS WEEK.

No contract = no lab for you.

Monday September 10th • Remember to write the questions and your answers in your lab book.

• Do Now:– 1. Why is the scientific method important?– 2. How can you tell independent and dependent

variables apart?

Date Table of Contents Page

9-10-12 IV and DV Practice

Whatever page you’re on

Why is the scientific method important?

• You will use it all year in every one of your labs.• You will need to know the scientific method for

all of your science classes in the future.• You will need to know and use the scientific

method when you create your own experiment at the end of the year.

• It can help you solve problems outside of school.

Which variable means CHANGE?

Independent Variable

Which variable means MEASURE?

Dependent Variable!

• By the end of class you will need to know the definitions of independent and dependent variables and be able to identify each variable in a scientific question.

Your Do Now stuff from earlier

Independent Variable Dependent Variable

IV and DV Review Competition• One group member should get out a piece of paper and

everyone should write his/her name on the paper.

• With your group, identify the IV and DV in these scientific questions.

• Each question is worth two points (one for IV and one for DV)

• The winning group will get candy!

1. Will a solid or a liquid cause a greater chemical reaction?

IV: solid/liquidDV: size of the chemical reaction

2. Do people wear more red during winter or summer?

IV: winter/summerDV: how much red they wear

3. Does a chicken lay more eggs when it is hot?

IV: temperatureDV: number of eggs

4. Does blood pressure get higher when people play video games?

IV: playing video gamesDV: blood pressure

5. Do old people get in more car accidents than young people?

IV: age DV: number of car accidents

6. What minerals in soil cause plants to have brighter flowers?

IV: minerals in soilDV: brightness of flowers

Count up your points and give your paper to the teacher

Exit Slip Time!• Label your note card with your FIRST AND

LAST NAME, DATE, and HOUR. Labeling this correctly is worth one point.

First and Last Name Date Hour1.

2.

3.

4.

Exit Slip

• Clear everything off of your table. Close lab books and put them on the floor.

• NO TALKING, at all. If you have a question raise your hand SILENTLY and wait for the teacher.

• You can just write the letter of the answer.

Question 1

• What is an independent variable?A. What is measured in an experimentB. What is changed in an experimentC. An educated guessD. What is always kept the same in an

experiment

Question 2

• What is an dependent variable?A. What is measured in an experimentB. What is changed in an experimentC. An educated guessD. What is always kept the same in an

experiment

Question 3

• What is the dependent variable in this scientific question?: “Do Jordans or Nikes make you run faster?”

A. Type of shoeB. How fast you runC. If I wear Jordans, then I will run faster.D. The track you run on

Question 4

• What is the independent variable in this scientific question: “Does more sunlight make plants grow faster?”

A. How quickly plants growB. The type of plantC. The amount of sunlight the plants getD. How tall the plants grow

Get your homework(Scientific Questions and Variables HW)

• The homework is due TOMORROW.

Tuesday September 11 or Wednesday September 12

Remember to write both the question and your answer.Do Now:1. Identify the IV and DV in this scientific

question: “Do students learn more in groups or by themselves?”

Please get out your homework and keep it on your table.

Date Table of Contents Page Number

9-11-12Or

9-12-12

Scientific Questions and Hypotheses

Whatever page you’re on

Get out Homework

• We will go over it together.

Why are scientific questions and predictions important in science?

Objective

• By the end of today you should be able to write a good hypothesis for a scientific question.

Notes

• Remember to write all the information in red.

Scientific Questions

• A good scientific question needs:–An independent variable–A dependent variable–To be measureable • heavier, taller, faster, increased• NOT prettier, better, healthier

Scientific Questions

• Example: Will the amount of sunlight a plant receives affect how tall the plant grows?– Why is this a good example?

What’s the IV?What’s the DV?Is it measureable?

Scientific Questions

• Do Jordans or Nikes make you run faster?– Why is this a good example?

What’s the IV?What’s the DV?Is it measureable?

Scientific Questions

• How many miles are between Oklahoma City and Tulsa?– Why is this a bad example?

What’s the IV?What’s the DV?Is it measureable?

Scientific Questions

• Does eating breakfast make you better at catching a baseball?

• Why is this a bad example?

What’s the IV?What’s the DV?Is it measureable?

How can we make it better?

Scientific Questions

• Does wearing makeup make you prettier?– Why is this a bad example?

What’s the IV?What’s the DV?Is it measureable?

How can we make it better?

Scientific Questions

• With your group, write a list of three GOOD scientific questions.

• Make sure they are measureable and have an IV and DV

Hypothesis

• A hypothesis is an educated guess. It’s like a prediction.

• It is an If/then statement• It is always in this format: “If (independent

variable) then (dependent variable).• Example: If you play violent video games,

then you will have higher blood pressure.

Hypothesis

• How to turn a scientific question into a hypothesis:– 1st identify the IV and DV– 2nd think about your prediction– 3rd begin with “If” and the IV– 4th finish it with “then” and the DV

Hypotheses

• Do Jordans or Nikes make you run faster?• IV: type of shoe (Nikes or Jordans)• DV: how fast you run• My prediction: I think that Nikes will help you

run faster.• Hypothesis: If you wear Nikes, then you will

run faster.

Hypotheses

• Does a plant grow taller when it is given more water?

• IV: how much water it gets• DV: how tall the plant grows• My prediction: I think that plants given more

water will grow taller.• Hypothesis: If a plant gets more water, then

it will grow taller.

Hypotheses

• Does eating breakfast lead to higher test scores?

• IV: eating breakfast• DV: test scores• My prediction: I think that eating breakfast

will lead to higher test scores.• Hypothesis: If you eat breakfast, then you

will earn higher test scores.

Add the red words to your glossary

• Remember to add the word and the page number

• You do not need to write the definition in the glossary

• Scientific question• Hypothesis

Hypothesis Stations

• On the same page as your Do Now (or the very next page) and your notes, please number from 1 to 10, skipping two or three lines between numbers.

Hypothesis Stations

• You will be going to stations around the room with your tablemates. For each station you will see a scientific question. Your job is to work together to write a hypothesis for each scientific question.

• Make sure you are recording each station number at the correct spot in your lab book.

Predict how long it will take for a strong dude to pull apart two phonebooks

• Put your prediction in hypothesis form.

• Example: If the strong dude tries to pull apart phonebooks, then it will take him 5 seconds.

Thursday September 13th or Friday September 14th

Remember to write both the question and your answer.

Do Now:1. What two words are in every well written

hypothesis?2. Make a list of at least 5 words to describe this

room.Date Table of Contents Page

9-13-12Or 9-14-12

Qualitative and Quantitative Observations

Whatever page you’re on

Notes

• Please write all the information in red.

What is an observation?

Why do we need to learn about observations in science?

Qualitative Observations

• Qualitative Observation: words that describe qualities or characteristics– Examples: red, soft, sour, dry

Draw a picture to help you remember the definition of qualitative.

Quantitative Observations

• Quantitative Observations: numbers and a label that describe something– Examples: 12 feet, twenty hours, 34.5 degrees Celsius

• Draw a picture to help you remember the definition of quantitative.

Add the red words to your glossary

• Remember you do not need to rewrite the definition. JUST WRITE THE WORD AND THE PAGE NUMBER.

• Qualitative Observation• Quantitative Observation

Tootsie Pop Observation Lab

Review

• Review these ideas for your exit slip:– Independent and dependent variables– Scientific questions– Hypothesis– Qualitative and quantitative observations

Exit Slip• Label your note card with your FIRST AND

LAST NAME, DATE, and HOUR. Labeling this correctly is worth one point.First and Last Name Date Hour1.

2.

3.

4.

5.

6.

Exit Slip

• Clear everything off of your table. Close lab books and put them on the floor.

• NO TALKING, at all. If you have a question raise your hand SILENTLY and wait for the teacher.

• If it is multiple choice, you can just write the letter of the answer.

Question 1

• What makes a good scientific question?A. It is measureable.B. It has a dependent variableC. It has an independent variableD. All of the above

Question 2

• What is a hypothesis?A. What is measured in an experimentB. What is changed in an experimentC. An educated guess or a predictionD. What is always kept the same in an

experiment

Question 3

• What is the independent variable in this scientific question?: “Do Jordans or Nikes make you run faster?”

A. Type of shoeB. How fast you runC. If I wear Jordans, then I will run faster.D. The track you run on

Question 4

• What is the best written hypothesis for this scientific question? “Do Jordans or Nikes make you run faster?”

A. Wearing Nikes makes you run faster.B. If I run faster, then I’m wearing Nikes.C. If I wear Nikes, then I will run faster.D. If I wear Nikes I’m going to run faster.

Question 5

• Write one example of a qualitative observation.

Question 6

• Give one example of a quantitative observation.