Write five sentences to describe yourself.

Ex.: I am 300 centimeters tall.

Bell Ringer-“Do Now”

Write 5 sentences to describe yourself.

Ex.: I am 300 centimeters tall.

I have brown hair.

I have brown eyes.

I have two brothers and one sister.

I have one daughter.

Review Bell Ringer-“Do Now”

Each group member will share an observation.

Group #1, Member A will share an observation.

Then Group #2, Member A will share another observation.

Go around to each group’s Member A

Bell Ringer/Do Now-Discussion

Materials:GogglesBalloonsWorksheet

Objective: Pop the balloonMake observations-three quantitative and three

qualitativeCome up with three testable questions that are

based on your observations.

Activity-Pop the Balloon

Creative Commons Attribution-Share Alike 3.0 Unported

Worksheet Alternative for Projection

Balloon Inquiry Activity

Quantitative Observations-should have numbers

1. 2. 3.

Leave space for more observations after your group discussion

1. 2. 3.

Balloon Inquiry Activity Task:blow up and pop a balloon. Then make observations and come up with testable questions as a result of your observations.Complete the following on your own sheet of paper.

Qualitative Observations-should have words/descriptions

Testable Questions:1. 2.3.• Next-When you have completed the above share your work with

your group. You can add to yours above• After you share with your group we are going to share with the

class. You can add more now if you like as well.

A member from each group will share an observation.Then, a member from another group will answer the

question: “Is this an observation? What type of observation is it?” based on the observation that was just shared.

The student who shared the observation will state whether or not the student who answered the question is correct

Circulate so that a member from every group has a chance to share an observation and answer a follow-up question.

Each group member will then share a testable question .

Balloon Inquiry Activity-Discussion

Goal: Identify independent and dependent variables in an experiment.

Identifying VariablesPhoto by: K. Pagan

There are two main types of variables:

Independent (Test) Variable: The variable that is changed/tested by the scientist; the ‘I change’ variable.

Dependent (Outcome) Variable: The variable that changes because of what the scientist changes; ”Data” quantitative and qualitative observations and data.

Types of Variables

Your testable question can TELL you what your variables are!

Ex. If Ame drinks coffee before bed, then she will not sleep very much.

Independent Variable (Test): drinking coffee

Dependent Variable(Outcome): the amount of sleep

Let’s see it-Apply what we learned

Now read the following experiment, what is the testable question and identify the independent and dependent variables

Julia wanted to test if temperature affected how fast milk goes bad and curdles. She left milk at room temperature, a fridge, and a garage in the summer in Florida. She then measured the amount of bacteria in the milk after 10 days.

Testable Question: ______________________

Independent (Test) Variable (IV): ______________________Dependent (Outcome) Variable (IV): _____________________

Use this testable question to identify the variables:

Does the amount of time the lights remain on in my house affect the price of my electric bill?

Independent (Test) Variable: __________________Dependent (Outcome) Variable: _______________

Group 1 -Practice

If I brush my cat for more hours, will the mass of cat fur on the furniture be reduced?

Independent (Test) Variable: ______________________

Dependent (Outcome) Variable: _____________________

Group 2- Practice

If you increase the number of vegetables you eat, then you will increase your health attend fewer doctor’s visits per year.

Independent (Test) Variable (IV): _____________Dependent (Outcome) Variable (IV): __________

Group 3 -Practice

If you increase the volume of milk you drink, will you increase your bone density?

Independent (Test) Variable (IV): _____________Dependent (Outcome) Variable (IV): __________

Group 4 -Practice

How does the amount of precipitation affect the number of green leaves present on a tree?

Independent (Test) Variable (IV): _____________Dependent (Outcome) Variable (IV): __________

Group 5 -Practice

The previous slide was an example of a a scientific study that is NOT derived from experimentation.

Goal: Distinguish between an experiment (which must involve the identification and control of variables) and other forms of scientific investigation such as observation and explain that not all scientific knowledge is derived from experimentation.

Another example:How does the number of friends on a social media

affect GPA?

Will an increase in the number of hours you spend in practice increase the number of free throw shots you will make?

Independent (Test) Variable (IV): _____________Dependent (Outcome) Variable (IV): __________

Group 6 -Practice

If you increase the amount of blood in the water, then will you increase the number of sharks in a 1 mile radius?

Independent (Test) Variable: _____________Dependent (Outcome) Variable: __________

Group 5 -Practice

Design your own experiment using your experience with popping the balloon

1. What is your Question?2. What is your Testable Question/Hypothesis?3. What measurements are you making? What

tool(s), if any tool.4. What is your Independent (test) Variable? 5. What is your Dependent (test) Variable?

Now that you know about variables:

Worksheet Alternative for Projection

Design a Balloon Experiment

Your Design

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Each group member will share a testable question.

Students will should alternate identifying peers’ independent and dependent variables and confirming whether questions are testable

Design a Balloon Experiment-Discussion

Next Slide is the Summative Assessment

1.  A scientists is testing to see if there is a connection between how long you run and how fast your heart beats. A person will run for 1 minute and then check their heart rate. Then they will run for 2 minutes and check their heart rate. Repeat this up to 6 minutes and see if there is a connection. What is a possible hypothesis? What are the variables? A. Testable Questions:__________________________________________________________________________

 

B. Independent (Test) Variable: ________________________________________________

 

C. Dependent (Outcome) Variable: _________________________________________________

 

2. A scientist is testing to see if the pH level of the soil has any effect on the plant height.  She changes the soil pH to low and high for different plants. What is a possible testable question? What are the variables?  A. Testable Questions:__________________________________________________________________________

 

B. Independent (Test) variable: ________________________________________________

 

C. Dependent (Outcome) Variable: _________________________________________________

Ticket to LeaveRead about these two experiments then write a testable question and identify the different variables, independent and dependent.