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The Reading bar charts 2 exercise appears under the 3rd grade (U.S.) Math Mission, Pre-algebra Math Mission and Mathematics I Math Mission. This exercise continues practice with reading bar charts and requires analysis of information from different bars in the bar chart.

Types of Problems

There are three types of problems in this exercise:

  1. Find the student that changed: This problem has a bar chart drawn with two bars for each student, a midterm and a final exam score. The user is asked to find the student that changed by the most or the least.
    Rbc2-1

    Find the student that changed

  2. Find the points of change: This problem has a bar chart drawn with two bars for each student, a midterm and a final exam score. Users are is asked to find the number of points by which a particular student changed.
    Rbc2-2

    Find the points of change

  3. Count the students that changed: This problem has a bar chart drawn with two bars for each student, a midterm and a final exam score. The user is asked to find the number of students that improved or went down between the exams.
    Rbc2-3

    Count the students that changed

Strategies

Counting is necessary and an ability to read bar charts is an advantage to doing this problem well.

  1. The majority of problems seem to be about improvement, but this could change.

Real-life Applications

  1. The bar charts in this exercise can be in real-world situations.
  2. Data and statistics appear in news reports and in the media every day.
  3. Statistics can be seen more frequently than calculus in every day life.

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