Proof by contradiction is one of the most powerful tools in a mathematician’s toolkit, and one … Math Proof by Contradiction: Classic Examples and How It Works (Euclid Contest Guide)Read more
Math Skills
Tangent Line to a Circle: Theorems, Equations and Cayley Contest Problems
A tangent line to a circle is one of the most useful geometric objects in Ontario … Tangent Line to a Circle: Theorems, Equations and Cayley Contest ProblemsRead more
Trigonometric Identities Sheet: Complete Reference for Grade 11–12 and the Euclid Contest
Trigonometric identities are one of the topics that separate strong Grade 11–12 math students from exceptional … Trigonometric Identities Sheet: Complete Reference for Grade 11–12 and the Euclid ContestRead more
Measurement in Grades 1–6: Area, Surface Area and Volume Made Clear
If your child can add and subtract but freezes when a worksheet mentions “units,” “covering,” or … Measurement in Grades 1–6: Area, Surface Area and Volume Made ClearRead more
Integer Word Problems: Every Type Explained with Worked Examples (Grade 7–9 and Pascal Contest)
Integers — positive numbers, negative numbers, and zero — appear in real-world contexts that students encounter … Integer Word Problems: Every Type Explained with Worked Examples (Grade 7–9 and Pascal Contest)Read more
Percentages in Word Problems: Every Type Explained with Worked Examples (Grade 9 and Pascal Contest)
Percentages appear in almost every real-world context — discounts, taxes, interest, test scores, population changes. They … Percentages in Word Problems: Every Type Explained with Worked Examples (Grade 9 and Pascal Contest)Read more
Quadratic Word Problems: Every Type Explained with Worked Examples (Grade 10 and Cayley Contest)
Quadratic word problems are where the algebra becomes real. Students who can expand and factor a … Quadratic Word Problems: Every Type Explained with Worked Examples (Grade 10 and Cayley Contest)Read more
Ratio and Proportion Activity Sheets: Practice Problems and Cayley Contest Guide
Ratio and proportion are two of the most widely applied concepts in mathematics. They appear in … Ratio and Proportion Activity Sheets: Practice Problems and Cayley Contest GuideRead more
Linear Interpolation Formula: Definition, Steps and Examples (Grade 9–10 and Pascal Contest)
The linear interpolation formula is one of those techniques that sounds more complicated than it is. … Linear Interpolation Formula: Definition, Steps and Examples (Grade 9–10 and Pascal Contest)Read more
Y-Intercept in Slope Intercept Form: How to Find It and Use It (Grade 9 Math)
The y-intercept in slope intercept form is one of the most useful concepts in Grade 9 … Y-Intercept in Slope Intercept Form: How to Find It and Use It (Grade 9 Math)Read more
