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Transcript of Scientific Method
Scientific methods are organized ways to answer
questions and solve problems.
"A process of critical thinking that uses observations and experiments to investigate testable predictions about
the physical universe."
You, like all scientists, will use scientific methods when you do science activities.
Ask a Question
Do Background Research
Test with an Experiment
Analyze Results and Draw Conclusions
Or maybe you thought,
"I wonder if..."
When you look at the world and wonder, you are looking at the world
like a scientist.
Have you ever noticed something
and asked "why?"
about some of the small details in your world is part of the scientific method.
Like that ant crawling across your desk.
Like that ant crawling across your desk!
You ask yourself where is that ant going?
Will the ant go for the carrot or will it go for the chocolate?
That's a good question!
Ask yourself what do I already know about ants?
Where can I find more information?
Begin gathering data!
It's a reasonable or educated guess about what will happen in your experiment.
We usually write it as an
the ant has a choice of sweet
or not sweet
it will choose
the sweet food.
Don't worry if it's correct.
It just needs to be your best guess.
You could just watch that ant eat your lunch.
Or, you could squish it like a bug
(hey, it is a bug!)
Or, you could think like a scientist and experiment.
Experimenting is like following a recipe.
1. You need to know your question and purpose.
2. You need to list your materials:
1 gm chocolate
1 gm carrot
Shoe box lid or tray
3. You need to write down your steps.
So what happened in your experiment?
No, don't just tell me in your words.
Give me numbers!
Candy - 4 times
Carrot - 2 times
Or even better, make a neat chart.
Food Selected by Ant
Trial 1 X
Trial 2 X
Trial 3 X
Trial 4 X
Trial 5 X
Trial 6 X
Total 4 2
Now you can draw conclusions
The ant chose the sugary candy more often than the carrot.
Go back to your hypothesis...
My hypothesis was correct. The ant did prefer chocolate over carrot.
A good conclusion also tries to explain why the results happened.
The ant chose the sugary food over the non sugary food because it has more energy. Perhaps the ant knows to go for foods that have quick energy, even if the carrot has better nutrition.
Like that ant crawling on your desk!
A scientist is a person who "does" science and uses the scientific method.