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The Scientific Method and the Bounty Experiment

We are going to discuss the Scientific Method and work through an experiment to practice.
by

Sam Bernal

on 28 August 2015

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Transcript of The Scientific Method and the Bounty Experiment

By: Mr. Bernal
With help from
Dexter
The
Scientific Method
Our Goal!
We will be able to use the scientific method to create and conduct a valid experiment with only one variable. We will also be able to analyze data to reach a reasonable conclusion.
Teks objectives:
5.2 Use scientific methods during laboratory and outdoor investigations.
5.2A Describe, plan and implement simple experimental investigations testing one variable.
5.2B Ask well-defined questions, formulate testable hypothesis and select and use appropriate equipment and technology.
5.2C Collect information by detailed observation and accurate measuring.
5.2D Analyze and interpret information to construct reasonable explanations from direct (observable) and indirect (inferred) evidence.
5.2E Demonstrate that repeated investigations may increase the reliability of the results.
5.2F Communicate valid conclusions in both written and verbal forms.
5.2G Construct appropriate simple graphs, tables, maps and charts using technology (including computers) to organize, examine and evaluate information.

5.3 Use critical thinking and scientific problem solving to make informed decisions.
5.3A Analyze, evaluate and critique scientific explanations by using empirical evidence, logical reasoning, experimental testing and observational testing. Examine scientific evidence in those scientific explanations to encourage critical thinking.
5.3B Evaluate accuracy of information related to promotional materials for products and services such as nutritional labels.
5.3C Draw or develop a model that represents how something works or how something looks that can not be seen such as a soda dispensing machine.
5.3D Connect grade-level appropriate science concepts with the history of science, science careers and contributions of scientists.

5.4 Use a variety of tools and methods to conduct science inquiry.
5.4A Collect, record and analyze information using tools (calculators, microscopes, cameras, computers, hand lenses, metric rulers, thermometers, prisms, mirrors, pan balances, triple beam balances, spring scales, graduated cylinders, beakers, hot plates, magnets, collecting nets, science journals, timing devices, terrariums and aquariums).
5.4B Use safety equipment (goggles and gloves).
Whoa! That's a lot!
Have you ever seen those commercials that tell you to buy something because the thing they sell is the best and the other stuff is just junk?
I don't think so...
My Laboratory has every thing I need.
What about you guys?
Have you ever wondered if they know their product is the best? Or, do you think they make it up so we buy it?
What are some things that they said that Bounty does better than the other brands in the commercial?
I think this is a commercial we have all seen.
This makes me so MAD!!!
How will I decide which
paper towels really are
the best to clean up in
my laboratory!!!
The Scientific Method is a process that scientists use to solve problems and come up with answers that make sense. They also use this so that other scientists can reproduce (do it again) and check to see if their conclusions are correct or check for errors.
The Scientific Method!!!
That’s how!
I knew that... You just said it before I could...
Never mind.... Can we keep going please? There is a mess in my laboratory and I need to know which paper towels my mom should by.
By the way, you have been talking for a while now and I think they are getting bored. Seriously, look Heidy is about to fall asleep! Can we get some music in here or something? SHEESH...
How about we listen to some music that tells us the steps involved in the scientific method as a whole, before we talk about each step individually?
Just play the music before you bore us to death!
Okay then. Here is a great song that will tell us a bit about the scientific method. Please try to write down the steps in your journal so we can dicuss them after the song.
Maybe that is why my experiments
are not accurate... Tell me more. Um I mean I already know but I may have forgot...a little.
Anyway, that song was better than the one on the radio. Right? Because it was about science!!
They are:
1st- Purpose
2nd- Research
3rd- Hypothesis
4th- Experiment
5th- Analysis
6th-Conclusion
Problem/Purpose
As we heard there are six steps to follow when using the scientific method.
If you remember Dexter was upset because he wants know which paper towels would absorb more water than the other paper towels.
Now we have a Purpose! WE are going to find out if Bounty really does absorb more liquids than other paper towels.
Step 1
Purpose/Question

Research
A
1.Ask people if they have tried it.
2. Read the label to find out its ingredients before you drink it.
3. Use your senses like smelling it before you drink it.
B
You would just not drink it.
Researching our problem helps us get understand our question and helps make a prediction and decide how to test it. For example, lets pretend you wanted to try a new soda called Mrs. Sanders Sock Sweat would you:
If you picked A then you decided to research! When we research we have enough information to guide us along to the next step in the process.
Activity
Lets take a minute to do some research on the diffrent kinds of paper towels we are going to test. Write your observtions in your journal
May I sugest another music break?
The Hypothesis is our "educated guess". After we have some information we can make a prediction in the form of an "IF/THEN statement. You have been making these kinds of statements every day and probably never noticed.

The IF part of our hypothesis will tell us the variable we will be testing.

The THEN part will try to predict the outcome of the experiment and why we think the outcome will be that way.
Take a few minutes to think of a time in everyday life that you made a hypothesis using an "if/then" statement.
Lets discuss as a class.

Activity2 - with a group look at the samples of paper towels that you have. Make your hypothesis about which paper towel will absorb the most liquid. Make sure to have it in the form of an "if /then" statement.
Hypothesis
The experiment is when we test our hypothesis. When conducting an experiment you need to identify which parts will be the
Constant
and the
Variable
.
Constants
are the things in the experiment that will stay the same. We make sure these stay the same so we have a more accurate data.
Variables
are the things that we will change in an experiment. It is the thing that we are testing. ITS THE ONLY THING THAT CHANGES.
Data
is information we collect during our experiment. We use data to compare and understand the results of our experiment. Data can be collected in many different ways.
Lets watch a video and try to figure out which are constants and variables. Also how they collect Data.








Lets discuss the constants and variables in this experiment.
Notice how they discussed their research, came up with a hypothesis and then designed their experiment before starting the experiment. Lets try to design our paper towel experiment. With a partner write down all of the things that will be the constants and the variable. Then write out how you will conduct the experiment. (What will yo do first,next, last?) When designing this experiment make sure to think about what you are testing, how you will test it and how you will measure it?
Activity: Lets set up our experiment using our scientific method organizer.
Experiment
,
When we analyze data we are comparing results from the experiments. Scientists often put their data in graphs or charts to better understand their results. This is where keeping your constants the same in your experiment really matters.
The data will tell us what effect changing the one variable had on the outcome of the experiment.
If you don't then the data on your graph may change and you will not have clear results.
Analysis
The conclusion is the last step of the scientific method. Here you will decide if your hypothesis is correct or if it was incorrect. If it was incorrect then you would make a new hypothesis based on what you learned in your experiment and then design and test a new experiment. If it was correct then you would retest the experiment to make sure all of you results are acurate. Scientist are constantly retesting to make sure that the experiment is a valid.
Conclusion
Well Dexter you will have to wait for the results of our experiment at the end of the week. You can also use these steps to compare your results to ours.
So which is it?!?!? I need to know what the best paper towel is for my Lab.
I knew you would say that.... Can we end this with a little more music? I have an experiment to conduct and I would like to hear the Scientific Method one more time.
Thank you for watching. Now let's find out which paper towel really is the best.
Review
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