1.
GRAPHING
Ms. Comer
Conceptual Science
Living Environment
2.
Warm-up: 5 mins
SEE – THINK – WONDER
•What do you see?
•What do you think?
•What do you
wonder about?
3.
What do Graphs Tell You?
• A graph is a way of expressing a relationship
between two different variables.
• There are several types of graphs
– Line Graph
– Bar Graph (Histogram)
– Pie Chart
– Pictograph
4.
Variables
Every scientific investigation has variables:
• Variable: factor that changes in an experiment.
• Independent variable: variable that is manipulated
(changed) in an experiment.
• Dependent variable: variable that is affected by the
independent variable.
Example: In an experiment where we are looking at the effect
of the amount of sunlight on plant growth, since we are
manipulating the amount of sunlight, it is the independent
variable and the growth of the plant is the dependent
variable.
5.
Line Graph
• A line graph shows
changes that occur
in related variables.
• The independent
variable is
generally plotted
on the horizontal
axis, or X-axis.
• The dependent
variable is plotted
on the vertical axis,
or Y-axis, of the
graph.
x
Y
6.
Creating a Line Graph
IMPORTANT COMPONENTS OF A GRAPH
1. Title: Tells the viewer what the graph is about.
2. X-Axis
- Independent variable
- Evenly spaced units
- Uses an appropriate scale
3. Y-Axix
- Dependent variable
- Evenly spaced units
- Uses and appropriate scale
4. Data: Data can be plotted on the graph from a DATA TABLE
5. Key: If there is more than one line on the graph, a key is needed.
7.
Bar Graph (Histogram)
• A bar graph is used
to compare a set of
measurements
amounts or changes.
8.
Pie Chart
• A circle graph or pie
chart is a divided circle
that shows how a part of
something relates to the
whole.
9.
Pictograph
• A pictograph is
like a bar graph
showing
comparison.
• A picture is used
to represent the
items that is
compared.
10.
Group Practice
In your team, analyze the graph that you have received.
On your chart paper:
1. Paste your graph on the chart paper.
2. Use BULLETSBULLETS to list your observations/analysis.
- What is the title of the graph?
- What is on the X axis?
- What is on the Y axis?
- What does the graph tell you?
11.
Graphing Quiz
1.What is the main thing that graphs show
us?
2. Name two things that ANY graph should
have.
3. Name FOUR types of graphs.
12.
Creating a Line Graph
Find the:
1. Title
2. X-Axis
3. Y-Axis
4. Key
13.
Group Practice
In your team, analyze the graph that you have received.
On your chart paper:
1. Paste your graph on the chart paper.
2. Use BULLETSBULLETS to list your observations/analysis.
- What is the title of the graph?
- What is on the X axis?
- What is on the Y axis?
- What does the graph tell you?
14.
Summary
3-2-1 Exit Slip
List: 3 - questions that you still have about graphing
2 - things that you have learned about graphing
1 - thing that you’ll remember about graphing
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