Learning archive
Problem of the week
Explore material preserved from an earlier CKSTEM programme: its ideas, learning resources and original context.
This is a historical archive. Dates, awards, fees and registration instructions below describe that edition; its entry period has closed. See the current contest programme and calendar.
LATEST PROBLEM OF THE WEEK
LATEST PROBLEM OF THE WEEK
CKSTEM will share amazing math and computing problems on a regular interval for you to try. We hope you will enjoy these. Let us know if you have any interesting problems that you would like us to publish.
Problems & Quizzes by Topics
Problems & Quizzes by Topics
Arithmetic
Pyramid of negative numbers (difficulty level 3)
Establish A Mathematical Connection Between The Summer Contests (difficulty level 2)
Creative Math - Substitution Arithmetic (difficulty level 3)
Order of operations Quiz (difficulty level 2)
Basic Fractions and Decimals Quiz (difficulty level 2)
Addition Quiz (difficulty level 1)
Subtraction Quiz (difficulty level 1)
Multiplication Quiz (difficulty level 1)
Division Quiz (difficulty level 1)
Algebra
A delicate relationship - percents, fractions, & decimals (difficulty level 1)
Advanced Exponent Comparison Strategies Quiz (difficulty level 3)
Quadratic Equation Quiz (difficulty level 3)
Geometry
Using Triangle Inequalities (difficulty level 3)
Missing Angles (difficulty level 1)
Logic
Why Can't We Make Exactly 7 Friends? (difficulty level 2)
Classic Legacy Puzzles (difficulty level 2)