Transcript The Nature of Science

Bell Ringer
 Answer the following questions in
your notebook:
1. What is your favorite ice cream
flavor?
a. chocolate b. strawberry c. vanilla
2. What is your favorite animal?
a. dog b. cat c. hamster d. fish e. bird
3. What is your favorite time of day?
a. morning b. afternoon c. night
Bell Ringer
1. Which of the following is an SI unit?
A. foot B. pound C. second D. yard
2. A ______ is an exact quantity that
people agree to use to compare
measurements.
A. variable
B. standard
C. unit
D. control
1-3
Communicating
with Graphs
A. What is a graph?
 A graph is a
visual display
of information
or data that is
used to detect
patterns.
 Is this a graph?
B. How are graphs useful?
 Scientists often graph their data to
detect patterns that would not have
been evident in a table.
 Can you think of any other ways
graphs might be useful?
C. Three common types of graphs:
line graphs
bar graphs
circle graphs
1. Line Graphs
 A line graph shows a relationship
where the dependent variable
changes due to a change in the
independent variable.
 The x-axis should always be used
for the independent variable.
1. Line Graphs
2. Bar Graphs
 Bar graphs compare
information collected
by counting.
 Each bar represents
a quantity counted at
a particular time.
2. Bar Graphs
3. Circle Graphs
 Circle graphs show how a
whole is broken into parts.
 The circular pie
represents the total.
 The slices represent the
parts and are usually
shown as percentages.
3. Circle Graphs
http://trms.sheridank12.net/New%20Homepage/Gen.www/aaGraphing/Web%20sites/pie.htm
Directions for Constructing Line Graphs:
1. Turn your paper long ways (landscape) and use the
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whole sheet for your graph.
Draw your x and y axes. Label both axes and be sure
not to forget your units!
Choose a good title for your graph.
Find the highest numbers on your data to decide how
high your scales need to go.
Plot all your points and be sure not to forget your key.
Each different line should be a different color and the
colors on your key must match.
Don’t forget to put your name on your graph.
When you are finished, you need to show your graph
to someone sitting near you to see if they can find
anything missing from your graph. Be sure to correct
any mistakes that are found.
Line Graph Data:
Average Height of Growing Plants
Time (days) Plant 1 Height (mm) Plant 2 Height (mm)
1
2
3
4
5
6
5
8
12
18
26
34
8
15
24
33
40
48
Directions for Conducting Surveys:
1. Number your paper to twenty (this is how
many different students you are going to
survey)
2. Write the question you are going to ask your
classmates at the top of your paper above
number one.
3. Choose somewhere between three to five
answer choices for your survey.
4. Once you are finished, return to your seat
tally up your totals for each answer choice.
Directions for Constructing Bar Graphs:
1. Tally up how many responses you had
for each answer choice on your survey
2. Next, figure out what your highest
number of responses was. This is how
high your numbers should go on your y
(vertical) axis.
3. Be sure you use colored pencils to
shade each bar a different color.