- Coordinate Geometry
- Measurement
- Proportional Reasoning
- Algebraic Expressions and Equations
- Sequences, Series and Patterns
Video by Art of Problem Solving's Richard Rusczyk.
- Sequences, Series and Patterns
Video by Art of Problem Solving's Richard Rusczyk.
- Sequences, Series and Patterns
Video by Art of Problem Solving's Richard Rusczyk.
- Number Theory
- Sequences, Series and Patterns
Video by Art of Problem Solving's Richard Rusczyk.
- Sequences, Series and Patterns
Video by Art of Problem Solving's Richard Rusczyk.
- Algebraic Expressions and Equations
- Problem Solving (Misc.)
- Sequences, Series and Patterns
Final exams often accompany the final days of school. Sherry has had four tests so far in her science class, each worth 1/6 of her final grade. She scored 87%, 89%, 92% and 91% on these tests. Her...
- Algebraic Expressions and Equations
- Problem Solving (Misc.)
- Sequences, Series and Patterns
Cara was born on January 1, 2010, and her mother, Sydney, was born on January 1, 1982. In what year will Sydney’s age be twice Cara’s age? If we let Cara’s age be C, then Sydney’s age is S = C + 28...
- Probability, Counting and Combinatorics
- Proportional Reasoning
- Sequences, Series and Patterns
According to “A History of Valentine’s Day Cards in America” by T.M. Wilson, in 1847 Esther Howland was the first to mass-produce Valentine’s Day cards. She made them out of lace, paint and expensive...