Adjacent circles
http://illuminations.nctm.org/index_d.aspx?id=182
A lesson plan for Grade 6 Mathematics
In this lesson, part of a set of four related Illuminations lessons on combinations, students are encouraged to discover all the combinations that can be made from three colors. This activity strengthens the students' problem-solving skills (including elimination and collection of organized data) and their ability to draw conclusions. The use of higher-level thinking skills (synthesis, analysis, and evaluations) is the overall goal.
North Carolina Curriculum Alignment
Mathematics (2004)
Grade 6
- Goal 4: Data Analysis and Probability - The learner will understand and determine probabilities.
- Objective 4.01: Develop fluency with counting strategies to determine the sample space for an event. Include lists, tree diagrams, frequency distribution tables, permutations, combinations, and the Fundamental Counting Principle.



