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The Scientific Method

6th grade overview of the scientific method with explanations
by

Lynn Pusateri

on 24 October 2016

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Transcript of The Scientific Method

A hypothesis is a tentative
explanation

for an

observation
or
scientific problem
that can be tested by further investigation.

Has to be
TESTABLE.
Uses correct lay out
and terminology - for example:

"If ____ (I do this) _____, then _____
(this) _____ will happen because _____."
Dependent Variable
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
same
as the experimental group in every way, except for the factor you wish to
test
.
Constant variable are all the factors or part of the experiment that stay same in the experimental or control group.
Communicate
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!)
B.
Science
Your experiment tests whether your hypothesis is
true
or
false
. It is important for your experiment to be a fair test. You conduct a
fair test
by making sure that you change only one
variable
at a time while keeping all other conditions the same (constant).
Designing a controlled Experiment

Independent Variable
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"
Control Group
Constant Variables
An observation is an act of
noting
and
recording
an event, characteristic,
behavior
, or anything else detected with an
instrument
or with the
senses
. Observations allow you to make informed hypotheses and to gather data for experiments.
Observations

The data must be collected and
recorded
onto a
chart using only metric (if quantitative)
.
Graphing
Scientific method
Data Collection
A series of
steps
used by scientists to solve a
problem
or
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
write the
abstract- but that will be another presentation for another day!
Abstract

The End
(for now!)

Quantitative
observations can be
expressed in numbers
and include records of time, temperature, mass, distance, and volume.
Qualitative
observations
include descriptions
of sights, sounds, smells, & textures
There are two categories of observations:
The Scientific Method
Scientific
Theory
-
scientist agree
on the outcome but
cannot be proven but it can be used to explain
.
Scientific
Law
- Can be tested and
proven
over and over again.
Infer
-
Explain
or interpret
based on what you already know.
Ex. A book held above a person's head will drop because of
gravity
.
Hypothesis
Experiment
Results
Learning Goal:
Develop a scientific investigation with a testable question and hypothesis. Conduct a scientific investigation using qualitative and quantitative observation with appropriate tools
Science
deals only with the
natural world
.
Scientists

collect
and
organize (data) information
in a careful, orderly way, looking for
patterns
and
connections
between events.
Scientists
propose

explanations
that
can be tested
be examining evidence.
Science is an
organized

way of using evidence to learn about the
natural world.

Conclusion

1. What happened in the
experiment?
2. Use data to support this.
3. Reflect on the hypothesis.

Claim
Evidence
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
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,
Full transcript