Fri, Feb. 7 Do Now
Solve the equation: 10 – x = 45
Rearrange the formula so that time is the
subject:
d = ½ g t2
Learning Intentions:
Students will interpret the steps of the
Scientific Method to formulate
hypothesis and create experimental
procedures.
Success Criteria: Students will be
successful when they can write a
focused hypothesis and complete
experimental procedure.
Scientific Method
What is the scientific method?
It is a _______________ that is used to find
_______________ to questions about the world
around us.
Is there only one “scientific method”?
No, there are several versions of the scientific
method. Some versions have more ___________,
while others may have only a few. However, they all
begin with the identification of a ______________ or
a ____________________ to be answered based on
observations of the world around us and provide an
________________ method for conducting and
analyzing an experiment.
What is a hypothesis?
It is an ________________ ___________ based on
observations and your knowledge of the topic.
What is data?
It is __________________ gathered during an
experiment.
T. Trimpe 2003 http://sciencespot.net/
Steps of the Scientific Method
________________________________________________
What do you want to know or explain? Use observations
you have made to write a question that addresses the
problem or topic you want to investigate.
________________________________________________
What do you think will happen? Predict the answer to your
question or the outcome of the experiment.
________________________________________________
How will you test your hypothesis? Develop a procedure for
a reliable experiment and address safety rules.
_________________________________________________
Follow the steps in your procedure to perform your experiment. Record data and
observations!
_________________________________________________
Is the data reliable? Does your data and observations from the experiment support
your hypothesis?
Yes
No
Is your data inaccurate or the
experiment flawed?
Yes _____________________________
Rewrite your procedure to address
the flaws in the original experiment.
No
_________________________________________________
Write a conclusion that summarizes the important parts of your experiment and the results.
Now Practice:
On the hypothesis sample sheet,
rewrite each hypothesis to provide a
clear statements of the intention of each
experiment.
Monday, Feb. 10, 2014 Do Now
List the steps of the Scientific
Method in the order in which
they are followed when solving a
problem.
VARIABLES: Variables are factors that
could change in an experiment.
There are two types of variables:
- independent - An independent variable
is one that the scientist changes so that
the effect on the dependent variable
can be observed.
-dependent – A dependent variable
changes as the independent variable
changes. It is this change that the
experiment is designed to observe.
VARIABLES
In an experiment, only one variable
should be changed at a time & all
other factors which could affect the
experiments results should be held
constant.
.
VARIABLES – factors that
could change in an experiment
INDEPENDENT
What we change
or
DEPENDENT
What we measure
EXAMPLES OF VARIABLES:
INDEPENDENT
DEPENDENT
VARIABLES
VARIABLE
amount of salt in water
freezing temperature
-------------------------------------------------------------------how long you studied, test score
amount of practice,
class participation
-------------------------------------------------------------------car weight
speed of car
slope of hill
surface roughness of hill