Math 9th Grade - 4th Period
Post on 11-Dec-2015
89 Views
Preview:
DESCRIPTION
Transcript
Math Fourth Period 2.015
1
Colegio Gimnasio Campestre San Sebastián
NOMBRE:_______________________________________________ GRADO: 9TH GRADE
PERIODO: FOURTH AREA: MATH MISS SOPHIE CORZO PÉREZ
KIND OF GRAPHS
Graphs are especially useful for presenting quantitative data. So often, a graph is a visual form of data
from a table. A graph can make it easier to analyze and interpret the information you have collected. That
is, it is easier to see what is happening and what trends or patterns there are. Graphs are ideal for
communicating scientific information. Also, we can consider graphs like pictures that help us understand
amounts. These amounts are called data. There are many kinds of graphs, each having special parts. The
most common are: pie graph, bar graph, picture graph and histogram.
Underline the unknown words and look up their meanings
__________________________________________________________________________________
__________________________________________________________________________________
__________________________________________________________________________________
__________________________________________________________________________________
__________________________________________________________________________________
__________________________________________________________________________________
_________________________________________________________________________________
PIE CHART
A circle graph is shaped like a circle. It is divided into fractions that look like pieces of pie, so sometimes a
circle graph is called a pie chart. Many times the fractional parts are different colors and a key explains the
colors.
Math Fourth Period 2.015
2
BAR CHART
A bar chart (or bar graph) is a chart with rectangular bars with lengths
proportional to the values that they represent. Bar charts are used for
comparing two or more values that were taken over time or on different
conditions, usually on small data sets. The bars can be horizontally
oriented or vertically oriented (also called column chart). Sometimes a
stretched graphic is used instead of a solid bar. It is a visual display used
to compare the amount or frequency of occurrence of different
characteristics of data and it is used to compare groups of data.
Examples
PICTURE GRAPH
A picture graph uses pictures or symbols to show data. One picture often stands for more than one vote
so a key is necessary to understand the symbols. Example:
HISTOGRAM
Histograms look similar to column graphs but are different because each
column represents a group of related data. The height of the column
shows the number of individuals counted, like a column graph. But the
columns in a histogram are touching to show that the data represented
by the columns is related.
Math Fourth Period 2.015
3
Choosing a graph type
Each time you need to draw a graph, think about the different kinds of graphs. Decide which kind of graph
will make your data the easiest to analyze and interpret. Sometimes there are several kinds of graphs that
would be suitable. For example, usually you can use a bar graph, a column graph or a pie graph to
present the same kinds of information. A line graph and a histogram can show the same data.
1. Draw different examples of each kind of graphs.
Pie Chart Bar Chart Picture Graph Histogram
Math Fourth Period 2.015
4
2. Answer these questions according to the text of kinds of graphs.
a. What is the main function to the graphs?
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
b. What is the difference between bar charts and histograms?
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
c. Can we make a bar chart vertically oriented?
______________________________________________________________________________
d. Can we draw a picture graph without information (data)?
______________________________________________________________________________
e. Can we show information through a bar o pie chart?
______________________________________________________________________________
f. How can we get information to draw a graph?
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
Let’s make some graphs using a survey about food.
1. Ask the question to _60_ people
>Survey. What is your favorite kind of food?
a. Colombian food: ______________________________
b. Chinese food: ________________________________
c. Italian food: __________________________________
d. Mexican food: ________________________________
e. American food: _______________________________
Math Fourth Period 2.015
5
2. Write the corresponding information (data)
a.________ people chose Colombian food
b. ________ people chose Chinese food
c. ________ people chose Italian food
d. ________ people chose Mexican food
e. ________ people chose American food
3. Draw the pie chart
4. Use the data to draw a bar chart
Let’s create a survey about hobbies to draw graphs
Math Fourth Period 2.015
6
5. Ask the question to _80_ people
>Survey. What is your hobby in holydays?
a._______________________: __________________________________
b._______________________: __________________________________
c._______________________: __________________________________
d._______________________: __________________________________
e._______________________: __________________________________
f._______________________: __________________________________
a.________ people chose _______________________
b. ________ people chose _______________________
c. ________ people chose _______________________
d. ________ people chose _______________________
e. ________ people chose _______________________
f. ________ people chose _______________________
Picture Graph
a.
b.
c.
d.
e.
f.
Math Fourth Period 2.015
7
Pie Chart
1. Invent a survey (free topic) and draw two different kinds of graphs.
2. Take into account the data of the last survey and make a graph in your computer, then print the graph
and paste in your math notebook.
3. Invent a survey, create the data and draw a pie chart, and a picture graph.
ASPECTS TO EVALUATE
YES
NO
I didn’t have any difficulty along the development of the worksheet.
I developed all the activities in order and dedication.
I felt myself comfortable doing all the activities.
I reinforced and acquired new knowledge to the activities planned in the
worksheet.
top related