Grade 8 Mathematics ๐
Ontario Curriculum (2020) · TDSB · Curated Video Lessons
Grade 8 Mathematics builds on foundational skills across five strands: Number, Algebra, Spatial Sense, Data, and Financial Literacy. Each section below connects a key strand topic to a focused video lesson to help you succeed on tests, assignments, and exams.
๐ข Fractions, Decimals & Percents
Understanding the relationships between fractions, decimals, and percents is central to Grade 8 Number. This lesson walks through converting between all three forms and applying them in problem-solving contexts involving ratios and proportions — skills that appear across almost every strand of Grade 8 Math.
- Fractions
- Decimals
- Percents
- Proportions
Source: Grade 8 Math Series
๐ก Rational & Irrational Numbers
Grade 8 expands the number system to include rational and irrational numbers. This video distinguishes between numbers that can be expressed as fractions and those that cannot — like √2 and ฯ — and shows how to place them on a number line and compare their values.
- Rational Numbers
- Irrational Numbers
- Number Lines
- Square Roots
Source: Math Pre-Algebra Series
๐งฎ Linear Equations with Fractions
The Algebra strand in Grade 8 introduces solving linear equations with variables on both sides and with fractional coefficients. This lesson covers solving equations with fractions step by step using inverse operations — one of the trickiest algebra skills at this level — with multiple worked examples.
- Variables
- Linear Equations
- Inverse Operations
- Fractions in Equations
Source: Grade 8 Math Series
๐ Pythagorean Theorem & 3D Shapes
The Pythagorean Theorem (a² + b² = c²) links algebra and geometry and is used to find missing sides of right triangles. Math Antics explains it clearly with visual proofs and worked examples, then connects it to surface area and volume of 3D figures — all key expectations in the Grade 8 Spatial Sense strand.
- Pythagorean Theorem
- Right Triangles
- Surface Area
- Volume
Source: Math Antics
๐ Data Literacy: Mean, Median & Mode
Grade 8 Data covers collecting and interpreting data sets, calculating measures of central tendency, and understanding probability. Khan Academy's statistics introduction explains mean, median, and mode with clear examples — including how outliers affect each measure — building the foundation for data analysis.
- Mean
- Median
- Mode
- Outliers & Spread
Source: Khan Academy
๐ฐ Simple & Compound Interest
Ontario's 2020 Grade 8 curriculum includes a Financial Literacy strand covering budgets, simple and compound interest, and making informed financial decisions. Khan Academy's lesson illustrates how simple and compound interest differ and how money grows over time — core knowledge for financial independence.
- Simple Interest
- Compound Interest
- Budgeting
- Financial Decisions
Source: Khan Academy
Built for TDSB students · Ontario Curriculum (2020) · Grade 8 Mathematics
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