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Welcome to my math blog! The purpose of this blog is to help you stay informed about our learning and experiences that have taken place during our math class. I have also included links your child (and you) may want to use in order to supplement math learning in 5th grade.

Thursday, April 9, 2015

Graphing: Bar Graphs

Today we focused on creating and analyzing bar graphs.  I had each student go to their math classroom to see their math assignment:

We opened all three of the attachments:

  1. Alphabet Frequency Homeroom Data
  2. 5 Most Frequently Used Letters
  3. Create a Graph
The first document was a spreadsheet that held the data we had gathered yesterday.  We had data on the alphabet letter frequency for each table, for each class, and for the grade level.  We opened this document and students highlighted the data for their table, their class totals, and the 5th grade totals.

Next, we opened Create a Graph and began building the first graph.  We chose Bar Graph, we gave the graph a title, we labeled the x-axis, we labeled the y-axis, and then we enlarged the data set to 26 to hold all of the letters of the alphabet.  At this point the students put in the data for their table group.  When finished, they copied the graph and posted it on to the Google Doc titled 5 Most Frequently Used Letters.

Once the first graph (Table Data) was posted, students were asked to fill in a frequency table from the graph showing the five most frequent letters and their frequency.  Then they were asked to  create a word problem from the graph.

Next, a graph for the Classroom Data was created.  It was copied onto the Google Doc.  Students fill in a frequency table for this graph.  Then they were asked to draw a conclusion about the data by comparing the two frequency tables.

A third graph for the Grade Level Data was created.  It was also copied onto the Google Doc.  Students filled in a frequency table for this graph.  Then they were asked to predict the five letters most frequently used.

Finally, they went to letterfrequency.org and find the five most frequently used letters from this site.  They filled in a final table and then were asked to draw a final conclusion based on the accuracy of our data as compared to the official data.  To see a completed example, visit Mason G.'s blog.

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