Office: Bahen Centre/BA 6176 |

Ed Barbeau is professor emeritus of mathematics at the University of Toronto.

- The Matching Game
- Intuition and Rigour
- Proof in Mathematics (with G. Hanna)
- Problems for school students and their parents (OAME 2007)
- Classic puzzles old and new
- Mathematics in a deck of cards
- A collection of interesting patterns
- Egerton Ryerson on mathemstics instruction in the schools

- Crossing the River (July 25, 2013)
- Life's Big Questions {August 15, 2013)
- Neat games for two people (August 22. 2013)
- The number 142857 (September 5, 2013)
- Some birthday surprises {September 19, 2013)
- The convenience store (October 17. 2013)
- Convenience store revisited (October 31, 2013)
- Frog jump {November 21, 2013)
- Pythagorean triples (December 5. 2013)
- A magic square (December 19, 2013)
- The richness of mathematics (January 9, 2014)
- Divisibility (January 23, 2014)
- The problem of the four points (February 5, 2014)
- Matchmaking (February 27, 2014)
- Red and green hats (March 20, 2014)
- Challenge with digits (March 27, May 1, May 8, 2014)
- The birthday cake (April 10, 2014)
- The problem of the large number (May 22, 2014)
- A pair of geometry problems (June 5, June 19, 2014)
- The ace rises to the top (July 3, 2014)
- The art of sitting and standing (July 17, 2014)
- The ratchet (July 31, 2014)
- The beer mug theorem (August 14, 2014)
- The beer mug theorem: diagram (August 14, 2014)
- The arithmetic games (August 21, 2014)
- The rotating table (September 18, 2014)
- A problem for this year (October 9, 2014)
- Summing cubes (October 16, 2014)
- The journey of Ardeth and Charlotte (November 6, 2014
- Billiard balls (November 27, 2014)
- Noughts and crosses (December 4, 2014)
- Jack, the hunter (December 18, 2014; January 8, 2015)
- Counting the zeros (January 15, 2015)
- The ten number surprise (January 29, 2015)
- The four colour theorem (February 12, 2015)
- Extra-sensory perception (February 26, 2015)
- A game for two (March 12, 2015)
- Dodecabus (March 26, 2015)
- The turnaround (April 9, 2015)
- Reproducing squares (April 30, 2015)
- Confidence in mathematics (May 14, 2015)
- Horses and Egyptian fractions (June 4, 2015)
- Homer Simpson and Fermat's Last Theorem (June 25, 2015)
- GIMPS and the prime from hell (July 9, 2015)
- Two problems about numbers (July 23, 2015)
- The Alabama paradox (August 6, 2015)
- Knights and knaves (August 27, 2015)
- Rule of Eleven (September 17, 2015)
- Matt. 20:1-16 slightly revised (October 1, 2015)
- It makes no difference (October 29, 2015)
- Lines through points (November 12, 2015)
- Running it backwards (December 3, 2015)
- More digit puzzles (December 17, 2015)
- Palindromic products and some digital solutions (January 14, 2016)
- The last three holiday problems (January 21, 2016)
- In my estimation (February 11, 2016)
- Don't be confounded by compounding (February 25, 2016)
- An organized shuffle (March 17, 2016)
- A sequence of squares (April 28, 2016)
- The last ones standing (May 26, 2016)
- Cuckoo clock (June 2, 2016)
- Bridge on the River Tay (June 9, 2016)
- A microworld series (June 23, 2016)
- Cribbage (July 14, 2016)

### Links for elementary teachers

- Books for elementary pupils
- Exercises on arithmetic
- Exercises on ratio and proportion (percentages, rates)
- Exercises on patterns
- Exercises on combinatorics
- Exercises on geometry
- Mathematics in a deck of cards