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The Scientific Method

6th grade overview of the scientific method with explanations
by

Scott Comstock

on 8 August 2014

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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 set up the
same
as the experimental group in every way, except for the factor you wish to
test
.
Constants are all the factors that are the same in both experimental & 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!)
Ask a Question (p xxiii)
The scientific method starts when you (the scientist) ask a
question
about something that you observe: How, What, When, Who, Which, Why, or Where? And, in order for the scientific method to answer the
question
it must be about something that you can measure, preferably with a
number
.
B.
Science
Variables
A variable is any factor that can
change
.There are
three
variables that you have to learn and use correctly.
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 / 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
.
The data table should have a
title
.
The
independent
&
dependent
variables must also be
labeled
Graphing
Scientific method
Data Collection
A series of
steps
used by scientists to solve a
problem
or
answer a question
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

Independent Variable on the left - vertical or Y axis. Dependent Variable on the horizontal or X axis. Don't forget to label and title your graphs

Now we have to
write the
abstract- but that will be another presentation for another day!
Good Scientists
Good scientists keep notebook about everything that they find interesting. This can be anything - space, bugs, force etc.
Analyze
The evidence from the experiment is used to determine if the hypothesis is proven or disproven.
Is your hypothesis
correct
or
incorrect
?
State your results.
Give a possible explanation
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
A. What is Science?
the goal of science is to
investigate
and
understand
the natural world, to
explain
events in the natural world, and to use those explanations to
make useful predictions
.
There are two categories of observations:
Introduction to Science and
the Scientific Method
The Scientific Method
Watch the video and with your group find the connections to the scientific method. Write them down.
Monty Python's
Scientific Method
Hypothesis
(pg.R2)
(pg. R3)
(pg. R30)
(pg. R30)
(pg. R30)
(pg. R30)
(pg. R28)
Step 1:
Step 1:
Step 2:
Step 3:
Step 4:
Step 5:
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
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
.

Learning Goal:
Develop a scientific investigation with a testable question and hypothesis. Conduct a scientific investigation using qualitative and quantitative observation with appropriate tools
Title: The effect of the ____________ on the ______________

(independent variable) (dependent variable)



Trial 1 Trial 2 Trial 3 Average











(p. R31)
(p. R33)
(p. R34)
Full transcript