Bull’s Eye Math

Bull’s Eye Math

CRA Description : 
Students are asked to use their knowledge of circles, area of circles, and sectors to calculate probabilities found in games that involve circular targets and to design a target.
Mathematical Models with Applications
Key Concepts and Terms: 
Concentric Circles
Geometric Probability
Prior Knowledge: 
Students should understand the concept of geometric probability. Students should be able to find the area of a circle and parts of a circle such as regions created by concentric circles and sectors.


This is a great activity for my geometry students. Many of my students are avid hunters, so anything related to hunting or archery is a huge bonus. The presentation of this information allows the students to relate the material into a format that they can appreciate. Since the majority of my students are hunters, and have a good understanding on the bulls-eye, I won't need to modify this assignment much (if at all). 

Submitted by NikLee33 (not verified) on

It's great when our lessons actually relate to our students' lives.  I hadn't thought of this angle with the hunters in the classroom.  Awesome.

Submitted by Hillary Procknow on

Introduction of probability is a key feature of this lesson.  Beginning in 2015-2016 Geometry will include a Probability strand which expand the knowledge of students to context other than Geometric Probability, which makes this a valuable lesson for the coming academic year.
Conics are moving from Algebra II - an algebraic view of circles will move to Geometry, and the remainder will move to Precalculus.  This lesson would be applicable for that strand, also.

Submitted by Beth.Loughry@re... (not verified) on

I didn't realize probablilty was moving into Geometry next year.  Thanks for that information!

Submitted by Hillary Procknow on

In AQR we are doing a unit on probability in games and will be having a game playing day next week to gather experimental probability since we calculated theoretical probability last week. I would like to keep this in mind for next year to add as an additional example in that unit.

Submitted by psather (not verified) on