Educators should be aware that, with the exception of the Grade 9 mathematics course, 2021 (MTH1W), the 2005 Mathematics curriculum for Grade 10 and the 2007 Mathematics curriculum for Grades 11–12 remain in effect. All secondary mathematics courses for Grades 10–12 will continue to be based on those documents. All references to Grade 9 that appear in The Ontario Curriculum, Grades 9 and 10: Mathematics, 2005 and The Ontario Curriculum, Grades 11 and 12: Mathematics, 2007 have been superseded by The Ontario Curriculum, Grade 9: Mathematics, 2021.


Mathematics (2021)

Image for decorative purpose only.
Image for decorative purpose only.


The Considerations for program planning and the Cross-curricular and integrated learning sections listed under the Program Planning tab outline important considerations for planning programs in all subjects and disciplines of the Ontario curriculum, Grades 1 to 12. The information provided there sets out current official curriculum policy, and educators must be guided by it in implementing curriculum and in creating the environment in which it is taught.

Important considerations for implementing the Grade 9 mathematics course, 2021 (MTH1W), are provided in the course section.

For Grades 10–12, refer to the curriculum PDFs, which can be found under Downloads.