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Ontario Tech acknowledges the lands and people of the Mississaugas of Scugog Island First Nation.

We are thankful to be welcome on these lands in friendship. The lands we are situated on are covered by the Williams Treaties and are the traditional territory of the Mississaugas, a branch of the greater Anishinaabeg Nation, including Algonquin, Ojibway, Odawa and Pottawatomi. These lands remain home to many Indigenous nations and peoples.

We acknowledge this land out of respect for the Indigenous nations who have cared for Turtle Island, also called North America, from before the arrival of settler peoples until this day. Most importantly, we acknowledge that the history of these lands has been tainted by poor treatment and a lack of friendship with the First Nations who call them home.

This history is something we are all affected by because we are all treaty people in Canada. We all have a shared history to reflect on, and each of us is affected by this history in different ways. Our past defines our present, but if we move forward as friends and allies, then it does not have to define our future.

Learn more about Indigenous Education and Cultural Services

Ann Lesage

Associate Professor

Director, Graduate Program

Faculty of Education

Contact information

Education Building Downtown Oshawa
11 Simcoe Street North
Oshawa, ON



Dr. LeSage’s research areas explore the inter-connectedness of teaching and learning mathematics from preschool through teacher professional development, including affect and cognition. Current projects include research on pre-service teachers’ mathematical knowledge and teaching efficacy; mobile apps as tools to support and elicit Kindergarten children’s understanding of numeracy; and video podcasts as a tool to support flipped classrooms.

For more information:

Courses taught

Bachelor of Arts (ESTD)

  • Developing Numeracy - AEDT3170 

Bachelor of Education

  • Mathematical Thinking and Doing - EDUC1308

Master of Education

  • Research Methods in Education - EDUC5002G

Research and expertise

  • Affect and cognition in mathematics
  • Children’s literature and mathematics
  • Elementary mathematics education
  • Pre-service teacher education
  • Video podcasts and teacher development
  • LeSage, A., & Ruttenberg-Rozen, R. (July 2020). “More Gooder”: children evaluate early numeracy apps. The 14th International Congress on Mathematical Education (ICME). Shanghai, China.
  • LeSage, A., Kay, R., Tepylo, D. & Allen, R. (Nov. 2019). Designing video podcasts to support at-risk university mathematics students. 12th Annual International Conference of Education, Research and Innovation (iCERi). Seville, Spain.
  • LeSage, A., Kay, R. & Tepylo, D. (Nov. 2019). A flipped classroom approach to support at-risk university mathematics students: Shifting the focus to pedagogy. 12th Annual International Conference of Education, Research and Innovation (iCERi). Seville, Spain.
  • LeSage, A. (2013). Web-based Video Clips: A supplemental resource for supporting pre-service elementary mathematics teachers. In Martinovic, D., Freiman, V., & Karadag, Z. (Eds.), Visual Mathematics and Cyberlearning. Series: Mathematics Education in a Digital Era, Vol. 1. p.187-207. Springer.  DOI: 10.1007/978-94-007-2321-4_8.
  • LeSage, A. (June 2013). Don’t count on the quality of children’s counting books. Paper presented at the 57th International Council on Education for Teaching (ICET) World Assembly. Bangkok, Thailand.
  • LeSage, A. (2012). Adapting math instruction to support prospective elementary teachers. Interactive Technology and Smart Education (ITSE). 9(1), 16-32. 
  • LeSage, A. (July 2011). So much to do, so little time: Supporting elementary pre-service teachers’ sense of rational numbers. Paper presented at The International Association for Development of the Information Society e-Learning Conference (IADIS). Rome, Italy. [Awarded Best Practical Paper]
  • Kay, R. H., & LeSage, A. (2009). Examining the benefits and challenges of using audience response systems: A review of the literature. Computers and Education. 53(3), 819-827.
  • LeSage, A. (January 2009). Students at-risk: What can they tell us about teaching and learning mathematics? Paper presented at the International Congress for School Effectiveness and Improvement (ICSEI). Vancouver, British Columbia.
  • Ross, J.A., Hogoboam-Gray, A., McDougall, D., & LeSage, A. (2003). A Survey Measuring Elementary Teachers’ Implementation of Standards-based Mathematics Teaching. Journal for Research in Mathematics Education. 34 (4), 344-363.