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|NRICH Maths, Univ. of Cambridge|
|Past problems from the NRICH Online Maths Club, archived by month. Each problem has a symbol indicating the stage, which tells you how little or how much mathematics you need to know to solve the problem but is no indication of its difficulty. The five stages correspond to ages 5-7, 7-11, 11-14, 14-16 and 16-18, and indicate that students in the UK normally meet the maths required during that key stage.|
|Levels:||Elementary, Middle School (6-8), High School (9-12)|
|Resource Types:||Problems/Puzzles, Daily/Weekly/Monthly Challenges|
|Math Topics:||Basic Algebra, Arithmetic/Early Math, Number Sense/About Numbers, Higher-Dimensional Geometry, Euclidean Plane Geometry, Number Theory, Trigonometry|
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