1. Double the Productivity: Distinguishing Struggle and Failure

• Andrew Divito & Robyn Ruttenberg-Rozen (Ontario Tech University)

2. The Role of Composition, De-composition, and Comparison Activities in 3- and 4-Year Old Children’s Abstraction Processes in Shape Recognition

• Ayse Pinar Sen (Brock University)

3. Enhancing Novice Tutors’ Confidence and K-8 Student Outcomes in After-School Math Support

• Catherine Susin & Isabella Favero (Brock University)

4. The Decimal Manipulative: A New Tool to Teach Decimals

• Connor Bradey (Upper Grand DSB & Waterloo Region DSB)

5. Leveraging Teacher Agency Through STEM Learning in the Early Year Classroom

• Jennifer Muchmaker & Robyn Ruttenberg-Rozen (Ontario Tech University)

6. Big Stories in Small Spirals: Exploring how Teachers Conceptualize and Enact a Spiralled Curriculum in Grade 9 Ontario Mathematics Classrooms

• Mena Fahmi (University of Ottawa)

7. PSTS Design of Data Visualizations: Tensions and Intentions

• Nkechi Ibeh & Ami Mamolo (Ontario Tech University)

8. Research on Mathematics Interventions for Young Children with Autism

• Olivia Conway Jenner & Robyn Ruttenberg-Rozen (Ontario Tech University)

9. Examples Presented in Calculus Textbooks: Differences or Otherwise Between Commercial Textbooks and Open Educational Resource Textbooks

• Serban Boghina & Francis Duah (Toronto Metropolitan University)

10. Teacher-Researcher Autoethnography of a Secondary School Teacher Attempting to Conduct Action Research in a Destreamed Mathematics Classroom

• Steven Roach (Niagara Catholic District School Board)

11. Evaluating the Association Between Attitudes Toward Mathematics and Mathematics Achievements Using Multilevel Modeling: Comparing TIMSS 2019 scores in Ontario and Quebec Fourth and Eighth Grade Students

• Sylvia Langton & Dragana Martinovic (University of Windsor)