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The Scientific Method
Transcript of The Scientific Method
Plan an Investigation
Analyze, Draw Conclusions, and Report Results
The data must be
collected and recorded
Conduct an Investigation
examine data by looking closely for patterns
What do you want to ask?
A variable is a factor that you can change.
It is a variable that is controlled and manipulated by the experimenter
It is the variable that is being tested and is 'dependent' on the independent variable
A variable that remains unchanged to allow for a comparison between the independent and dependent variable
Organize & Record Data
Data can be organized in various ways like charts, graphs, and diagrams
to write down orderly and neat information
Charts provide visual comparison of data
Graphs visually track
2 variables, usually showing changes over a period of time
Diagrams are labeled drawings that provide data
Scientists use this data to make and support inferences.
a conclusion based on evidence or data
to notice or study something closely
qualitative data: traits or qualities
quantitative data: quantity, or numbers
amount used as a standard
anything used to get something done
- grouping similar items together;
helps scientists compare and contrast and understand relationships
about something you observe.
"If _______, then ________ will happen."
State what you think the answer to your question is based on things you know.
list of the supplies and tools used in the experiment
can be answered by taking measurements and making observations.
processes scientists use to answer questions
* conducting the investigation
multiple times is a good idea
* more results =
more accurate data
A series of steps used by scientists to solve a problem or answer a question
If I mix blue and red paint, then I'll have purple paint.
Make a plan
* What steps will you take?
* What materials will you need?
* How much time do you need?
test one thing at a time
to learn about red and blue paint, I would need: red paint, blue paint, a small bowl, and a paint brush to mix my colors
Different shades of red
Blue paint, paint brush, amount of red and blue paint
What color will I make if I mix red and blue paint together?
Scientists must write down everything they do in investigations in a
so that the experiments can be duplicated.
examples: materials, procedures, results, observations
*What will you do?
*When will you do it?
*Write out your procedure
first, then follow them.
*Be very clear and concise.
Objects or organisms in an experiment that are kept under normal conditions
example: the plant under
the white light
Objects or organisms that are experimented on
example: plant under green light
Oobleck! Is it a solid or a liquid?
Properties of Solids
no fixed shape - liquids flow
takes the shape of its container
Properties of Liquids
does not flow easily
Was your hypothesis correct? Explain why or why not. Use examples from your observations.
Keep your voices down
Listen to the teachers!
Keep your hands to yourself
If you break rules, you will have to stop participating and complete pages in your science textbook
Clean up your area when finished
decide what the data means
Was your hypothesis correct?
Provide data to support your statement
Scientists write up experiments to share results. They often read each other's papers and try to do the experiment themselves
a single, completed investigation
Do it again!