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The Scientific Method
Transcript of The Scientific Method
that can be tested by further investigation.
Has to be
Uses correct lay out
and terminology - for example:
"If ____ (I do this) _____, then _____
(this) _____ will happen because _____."
The factor that you measure to gather results.
The D.V. is expressed in your hypothesis after the word "then".
The control group is a group that represents the "normal" conditions and is set up the
as the experimental group in every way, except for the factor you wish to
Constant variable are all the factors or part of the experiment that stay same in the experimental or control group.
To complete your science fair project you will communicate your results to others in a final report and a display board. Professional scientists do the same thing by publishing their final report in a scientific journal or by presenting their results on a poster
at a scientific meeting.
(We do Science Fair!)
Your experiment tests whether your hypothesis is
. It is important for your experiment to be a fair test. You conduct a
by making sure that you change only one
at a time while keeping all other conditions the same (constant).
Designing a controlled Experiment
This is the factor that you wish to test and this is changed so that it can be tested.
The I.V. is expressed in your hypothesis after the word "if"
An observation is an act of
an event, characteristic,
, or anything else detected with an
or with the
. Observations allow you to make informed hypotheses and to gather data for experiments.
The data must be collected and
chart using only metric (if quantitative)
A series of
used by scientists to solve a
answer a question (where, how, which)
Choose a graph that matches your data:
Bar Graph: snapshot in time
Double Bar Graph: compare two similar sets of data on ONE bar graph
Line Graph: changes over time
Now we have to
abstract- but that will be another presentation for another day!
observations can be
expressed in numbers
and include records of time, temperature, mass, distance, and volume.
of sights, sounds, smells, & textures
There are two categories of observations:
The Scientific Method
on the outcome but
cannot be proven but it can be used to explain
- Can be tested and
over and over again.
based on what you already know.
Ex. A book held above a person's head will drop because of
Develop a scientific investigation with a testable question and hypothesis. Conduct a scientific investigation using qualitative and quantitative observation with appropriate tools
deals only with the
organize (data) information
in a careful, orderly way, looking for
can be tested
be examining evidence.
Science is an
way of using evidence to learn about the
1. What happened in the
2. Use data to support this.
3. Reflect on the hypothesis.
A claim is a statement of a student’s understanding about a phenomenon or about the results of an investigation; it answers the original question by expressing what he or she is trying to help an audience understand and believe.
Data becomes evidence when used to support a claim. A claim is convincing to someone else only when there is strong evidence to support it.
Reasoning illustrates why particular evidence is the correct evidence to use in support of a particular claim. Reasoning typically includes describing the scientific knowledge, principle, or theory,