Math Project: How to Make Circle Graphs and Pie Charts
- Grades
- Grades 5–8
- Pages
- 5
- File type
- Preparation
- Print ready
- Subject
- Graphing, Geometry, Math
- Topic
- Math Project, Pie Charts
- Resource types
- Lesson Plans, Activities, Worksheets
- Preparation
- Print ready
From the author
About this resource
This fun math project includes clear step-by-step instructions to show your students how to make a circle graph. This is a great way to review several math skills while showing how useful they can be!
Tasks include:
- Writing a survey question: Your students learn to write a question that has exactly six possible answers.
- Collecting data: Your students can ask the members of your class their question. They collect data using a tally chart. They need to ask exactly 25 people.
- Recording results as a fraction: Once they have their data, they can turn each answer into a fraction with a denominator of 25.
- Calculating an equivalent fraction: Then, they calculate an equivalent fraction with a denominator of 100.
- Working with percent (written as a decimal): Finally, they turn that fraction into a decimal proportion. They multiply this decimal proportion by 360 degrees in a circle (they can use a calculator for this part) to find out how many degrees each answer gets.
- Drawing angles with a protractor: They carefully draw the six angles in their pie chart, one by one.
- Labelling a graph: They label the graph to make it clear for others to read.
Grades to Use With:
This math project works well in the middle grades (4-8) when students know how to use protractors, calculate with fractions and decimals, and make graphs. It could also work well in a high school special education classroom.
What's Included: A total of 5 pages in PDF format
Title Page
Survey Page
Equivalent Fractions Page
Decimals Page
Circle Graph Template
Standards:
Grade 7 Geometry:
Draw shapes with specific conditions.
Grade 4 Fractions:
Write equivalent fractions.
Write fractions as equivalent decimals out of 100.
Grade 6 Ratios and Proportional Relationships
Work with percentages.
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In the classroom
Teaching tips & learning objectives
Learning objectives
Convert a tally count into an equivalent fraction with a denominator of 100 and a decimal percent.
Calculate the number of degrees a percent represents out of 360 and verify that all parts sum to 360.
Use a protractor to accurately draw sequential angles that form a complete circle graph from real survey data.
Teaching tips
Have students confirm their six degree values add up to 360 before they pick up a protractor, catching rounding errors early.
Model the worked example (4/25 = 16/100 = 16% = 0.16 = 57.6°) on the board before releasing students to their own survey data.
Pair students to conduct the 25-person survey together so data collection doesn't eat into the math class time needed for the conversion and drawing steps.
Skills covered
Fraction-to-percent conversion — students scale a tally out of 25 up to an equivalent fraction out of 100 and a decimal percent.
Percent-to-degree conversion — students multiply a decimal percent by 360 to find each answer's angle measure.
Protractor angle-drawing — students align a protractor at a circle's centre to plot sequential angles that total 360 degrees.
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Resource details
Concepts & topics
Core concepts
Core concepts
Equivalent fractions
Percent
Circle graphs
Angle measurement
Topics
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