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Problem-Solving Inquiry-Based Lessons

This collection of inquiry-based lessons in probability is a work in progress.  They aim to provide a resource for mathematics teachers interested on the use of graphing calculators and the inquiry-based (IB) approach in their classrooms. To the best of our knowledge, the lessons are original work; materials used from other sources are cited within the lessons. 

Lessons are catagorized for use with various technology, particularly the TI-Nspire and the TI-83 and 84 graphing calculators from Texas Instruments.

 The lessons are been developed under the guidance of Dr. Antonio R. Quesada by students of the course “Math Technology and Communication” and by participant teachers in the summer workshops “Selected Topics in Secondary Mathematics for HS Teachers Grades 8-12, Parts I and II, offered at The University of Akron.  An link to lesson contributors is at the bottom of this page.

 Users of these lessons are encouraged to submit corrections and/or suggestions on how to improve them.  Readers are encouraged to submit additional lessons on missing topics using the same format.  An editorial committee will review any lesson submitted prior to being accepted or rejected.  Once a lesson is accepted the author(s) will be acknowledged in the index.

 The following institutions have provided initial support for the development of lessons or for the workshops: the Ohio Department of Education Mathematics Initiative Grant, The Ohio Department of Education, The University of Akron Graduate School Tuition Scholarships and TI price reduction equipment grants, the Board of Regents Title II Program, The Knight Foundation (with the Summit Education Initiative as a fiscal agent), and The University of Akron.



High School Level


Middle School Level


High School and Middle School Level


Other IB Problem-Solving Lessons (specific technology indicated when used)

High School Level


High School and Middle School Level

The Census Problem

Coffee and Milk

Fit the Facts

The Pairing Problem

Sixty Pennies in a Row
Solving Problems by Trial and Error
The Tournament Problem

Tournament Pairing Problems

Various Problems
Venn Diagrams

Middle School Level





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This site was last updated 06/12/09