National Center for Ecological Analysis and Synthesis, University of California Santa Barbara
Ucsb / Pie Graphs (Piece of Cake)
This page gives an example and easy-to-understand description of a pie graph (circle graph.) Also provides an opportunity for students to test their abilities to read a pie graph.
Varsity Tutors
Varsity Tutors: Hotmath: Algebra Review: Circle Graph
Find a quick, concise explanation of Circle/Pie Graphs. An example is given and step by step clearly explained.
Varsity Tutors
Varsity Tutors: Hotmath: Practice Problems: Circle Graphs
Two problems present practice creating a circle graph from a data table. Both are given with each step to the solution cleverly revealed one at a time. You can work each step of the problem then click the "View Solution" button to check...
National Council of Teachers of Mathematics
Nctm: Illuminations: Circle Grapher
A computer applet that will draw any circle graph with student's data input.