enter the classroom silently and find your seat. 1.take out your hawk card, agenda, 2 pencils, and...

Enter the classroom silently and find your seat. 1. Take out your HAWK card,

agenda, 2 pencils, and your lab report form.

2. Put your backpack along the BACK wall.

3. Write down homework (finish ENTIRE guided notes packet) in your agenda.

4. Stack agendas toward the end of your table group.

5. Wait silently for instructions

7 minAGENDADO NOW: None

Objective(s): SWBAT analyze data to form valid conclusions.

SWBAT communicate valid results of their experimental investigation by writing a conclusion based on data using the CER method.

DATE HERE

Learner Profile: Communicator

Statement of Inquiry/IB TraitSTATEMENT OF INQUIRY: Humans explore the relationships among interacting variables and use evidence to impact communities and find functional solutions using scientific and technological advances.

IB TRAIT: COMMUNICATORS

I. Do NowII. AnalysisIII. Guided PracticeIV. CER MethodV. Guided PracticeVI. Parachute Lab ConclusionVII. Exit TicketVIII.Closing and Questions

Conclusions

“A subtle thought that is in error may yet give rise to fruitful inquiry that can establish truths of great value.”

– Isaac Asimov

Scientific Method

• The steps of the Scientific Method are:1. Asking a question2. Performing background

research3. Forming a hypothesis4. Testing the hypothesis 5. Analyzing data and drawing

conclusions6. Communicating results

Analyzing Data• Scientists take time to look at

their data, read and analyze it to determine if the data they collected successfully answers their scientific question.

• Just because data collected does not prove the scientist’s hypothesis, does not meant that the experiment did not work or did not teach the scientist anything on the topic.

Analyzing Data

• Today, before you write your conclusion, take some time to look at your data and think critically about it.

• Consider if the data you collected was valid and if you made any mistakes while collecting your data.


Conclusions


– Isaac Asimov

Guided PracticeParachute Lab

• As a table group, you will use the guiding questions under the analysis section in your lab report.

• Think critically about the question and hypothesis you created and the experiment you performed.

• Voice Level 1• Raise your hands for additional

support.

15 min


Conclusions


– Isaac Asimov

Scientific Method

• The steps of the Scientific Method are:1. Asking a question2. Performing background

research3. Forming a hypothesis4. Testing the hypothesis 5. Analyzing data and drawing

conclusions6. Communicating results

Making Claims

My Claim: The University of Kansas is the best university in the nation.

How valid is this claim?What do I need to back up what I’m telling you about this university?

• #101 – US News & World Report best universities• #47 – US News & World Report best public

schools• #75 – Washington Monthly best universities• 5 time men’s basketball national champion• 2008 Orange Bowl (football) champion• #1 Loudest college basketball arena

Making Conclusions

• In science, we make conclusions at the end of an experiment to explain what we learned and to present our data.

• The conclusion should also tell if your hypothesis was accepted or rejected.– Remember, your hypothesis is

an if… then statement about what you think will happen during the experiment.

Making Conclusions

• After you have performed your experiment, collected data, organized your data, and analyzed it, you can finally decide whether your data proved your hypothesis to be true or false.

Making Conclusions• You also need to decide if your

experiment was valid or not.• Did your experiment test your

question? • Your results should answer the

question you started with. If not, the experiment is not valid.– Example – If your experiment

measured how much weight your parachute could hold, it is not valid.

– Our question was about the amount of time it would float for, not the amount of weight it would hold.

A good conclusion…• A good conclusion – – Accepts or rejects the

hypothesis. – Identifies sources of error.– Suggests future

experiments.

Turn and Talk

Why is a conclusion important to an experiment?

2 min

CER MethodWhen you write your conclusions, be

sure to use the CER method.

C: Claim – An answer to the investigation’s questionE: Evidence – Proof that your claim is correctR: Reasoning – Explanation of why the claim is correct.

Example• Mrs. Kerschen-Wright thinks that warm water will

evaporate faster than cold water. She sets up an experiment with two containers of water, Container A and Container B. The containers are made of the same material and both have the same volume of water, 25 mL. The temperature of Container A is -15 degrees Celsius, while Container B’s temperature is 25 degrees Celsius. She leaves them for a week to see which one will evaporate faster. Her results are in the table below.

Container Volume of Water (mL) Temperature (°C) Time Required (h)

A 25 -15 72

B 25 25 24

Example• Scientific Question: – Does the temperature of water affect the time it

requires to evaporate?• Hypothesis:– If the water is warm, then it will evaporate quickly.

• Independent Variable: – The temperature of the water

• Dependent Variable: – Time required to evaporate

• Constant Variables: – The container material, volume of water, room

conditions.

Example

• Was my hypothesis proven? How do we know?– My hypothesis was “If the water is warm, then it will

evaporate quickly. Yes, my hypothesis was proven because the container of water that was 25°C evaporated more quickly than the container of water that was -15°C.


A 25 -15 72

B 25 25 24

Example

• Conclusion– My hypothesis was, if the water is warm, then it will evaporate quickly.

Based on the experiment, my hypothesis was proven and warm water did evaporate more quickly than cold water. The results of the experiment show that a container with 25 mL of water at -15°C took 72 hours to evaporate while a container with 25 mL of water at 25°C took only 24 hours to evaporate. When water is warm, the particles move quickly. When the particles are moving quickly, the water is able to evaporate more quickly than if the water was cold. There were no sources of error in the experiment. In future, the experiment could be further proven by performing more trials and testing different amounts of water.


A 25 -15 72

B 25 25 24


Conclusions


– Isaac Asimov

Guided Practice15 min

• Let’s look at a scientific investigation and a graph.

• We’ll use our knowledge about the CER Method and writing conclusions to write our own conclusion based on the data.

Reggie has been observing recycling patterns in his neighborhood. He thinks that there is more recycling done at the beginning of the week than the end of the week. Reggie counts the amount of aluminum collected on Monday, Wednesday, and Friday of one week. The graph to the right shows the amount of aluminum collected during one week for recycling.

Mas

s (k

g)

Day of Collection

Monday Wednesday Friday

1. Use the CER Method to write a conclusion from Reggie’s data.

Guided Practice15 min

Turn and Talk

As a table group, work together to come up with a claim based on the data provided to

you in the graph.

3 min

Turn and Talk

As a table group, work together to come up with evidence from the graph to support

your claim. {Explain the entire data table in words.}

5 min

Turn and Talk

As a table group, work together to determine the reasons why the evidence supports the

claim. {Be sure to tell if the hypothesis was supported or not and

include suggestions for future experiments.}

3 min


Conclusions


– Isaac Asimov

Making Conclusions

• The final section of your lab report is the Conclusion section.

• There are also several guiding questions to help you write the conclusion.

• Use what you learned about the CER method to help guide you as you are completing it.

15 min

Independent PracticeParachute Lab

• Now that you have a rough draft, you will create your final draft independently.

• Remember to write in complete sentences and fully answer every question.

• Focus on the CER Method to form your complete responses!

• Voice level 0

15 min


Conclusions


– Isaac Asimov

Complete the exit ticket silently and stack at your table group when you are finished.

You may pack up your things.

Exit Ticket 5 min


Conclusions


– Isaac Asimov

STOP CardsS Summarize: Summarize the day’s lesson and what we learned.T Trait: What IB trait relates to the lesson?O Objective: Re-state in your own words and say whether or not we met that objective for the day.P Purpose: What was the purpose of this lesson?

Exit Procedure

• SILENTLY1. Pack up all of your things.2. Wait for teach directions to:

1. Push in your chair.2. Form a line at the door.3. Silently exit the classroom.

3. Hallways are a Level 1 (whisper)

enter the classroom silently and find your seat. 1.take out your hawk card, agenda, 2 pencils, and...

Documents

lab report form

best university

fruitful inquiry

valid results

valid conclusions

scientific question

truths of great value

scientists hypothesis