Ontario Math Curriculum Explained for Parents — What Your Child Learns in Each Grade
Ontario updated its math curriculum in 2020, and many parents are confused about what their child is supposed to know. This guide breaks down the Ontario Mathematics Curriculum in plain language — no education jargon.
The Five Math Strands (All Grades)
Every grade from 1 to 9 covers five core strands. Think of these as “subject areas” within math:
- Number Sense and Numeration — The foundation. Counting, place value, operations (+, −, ×, ÷), fractions, decimals, integers. This strand typically takes the most classroom time.
- Algebra (Patterning and Algebra) — Finding patterns, using variables, solving equations. This builds from “what comes next: 2, 4, 6, __?” in Grade 1 to solving linear equations in Grade 9.
- Measurement — Length, area, volume, time, temperature, and metric units. Practical, real-world math.
- Geometry and Spatial Sense — Shapes (2D and 3D), angles, symmetry, coordinate grids, transformations.
- Data Management and Probability — Collecting data, making graphs, calculating averages, understanding chance.
What Changes Grade to Grade?
The curriculum is spiral — the same five strands repeat every year, but with increasing complexity. Here’s what each grade emphasizes:
Grade 1 (Ages 6–7)
Counting to 50, adding and subtracting to 20, recognizing basic shapes, sorting objects, telling time to the hour. The focus is building number sense through hands-on exploration.
See Grade 1 curriculum details →
Grade 2 (Ages 7–8)
Place value to 100, two-digit addition and subtraction, intro to multiplication (equal groups), Canadian money, measuring in centimetres. Students start making and reading simple bar graphs.
See Grade 2 curriculum details →
Grade 3 (Ages 8–9) — EQAO Year
Multiplication and division facts to 7×7, fractions introduced, perimeter, 3D shapes. This is the first EQAO assessment year — students are tested on all strands. Regular practice throughout the year is the best preparation.
See Grade 3 curriculum details → | EQAO prep →
Grade 4 (Ages 9–10)
Multiplication tables to 9×9, multi-digit addition/subtraction, fraction equivalents, area of rectangles, classifying angles, coordinate grids. A big jump in complexity — this is where many kids first feel “math is hard.”
See Grade 4 curriculum details →
Grade 5 (Ages 10–11)
Multi-digit multiplication, long division, decimal operations, fraction addition/subtraction, volume of prisms, classifying triangles. Students must handle considerably more complex problems.
See Grade 5 curriculum details →
Grade 6 (Ages 11–12) — EQAO Year
Ratios, percentages, integers, fraction operations (×, ÷), algebraic expressions, circle graphs, area of parallelograms. The second EQAO year — results are sent to parents as a provincial report.
See Grade 6 curriculum details → | Free Grade 6 worksheets →
Grade 7 (Ages 12–13)
Proportional reasoning, integer operations, combining like terms, circumference and area of circles, scatter plots. The transition to more abstract thinking begins in earnest.
See Grade 7 curriculum details →
Grade 8 (Ages 13–14)
Pythagorean theorem, linear relations (y = mx + b), multi-step equations, surface area of cylinders, lines of best fit. This is high-school-prep year — strong Grade 8 skills set the foundation for success in Grade 9.
See Grade 8 curriculum details →
Grade 9 (Ages 14–15) — EQAO Year (De-streamed)
Since 2021, all Grade 9 students take the same de-streamed course (MTH1W). Topics include: polynomials, linear equations, financial literacy, analytic geometry, and data analysis. The EQAO assessment is now digital and covers the entire course.
See Grade 9 curriculum details →
The 2020 Curriculum Changes
The revised Ontario math curriculum introduced several notable changes:
- Financial literacy — Added across all grades (budgeting, saving, spending)
- Coding and computational thinking — Integrated into algebra (not a separate course)
- Social-emotional learning — Math identity and perseverance are now explicit expectations
- De-streaming in Grade 9 — Applied and academic streams merged into a single course (MTH1W)
How to Know if Your Child Is On Track
Ask yourself these questions:
- Can your child explain their work, not just get the right answer?
- Do they handle the computational basics fluently (e.g., times tables by end of Grade 4)?
- Are they comfortable with fractions? (The #1 predictor of high school math success)
- Did they meet the provincial standard on their last EQAO assessment?
If you’re unsure, consistent adaptive practice is the safest strategy. MapleMath’s adaptive platform identifies gaps automatically and focuses practice where your child needs it most.