CEMC - Centre for Education in Mathematics and Computing

Grades

Grades 5-12; specific contests are grade-targeted (e.g., Pascal for Grade 9, Cayley for Grade 10, Fermat for Grade 11, etc.)

Age

No explicit age restrictions; determined by grade level

Citizenship

International; open to students in 85+ countries worldwide. Contests available in English and French.

Prerequisites

No formal prerequisites; contests designed for students across a range of abilities from beginner to advanced

Steps

1. School registers for CEMC school account (Principal or Head of Math submits new school application)
2. CEMC assigns 9-digit school number and password (takes up to 3 weeks for manual review)
3. Head of Math uses credentials to order contests via Contest Supervisor Portal
4. Student participates in contest on official date under school supervision
5. School receives materials (papers, Scantron forms, or online access) before contest date
6. School submits completed materials back to CEMC via courier (for paper contests) or online submission
7. CEMC marks and posts results on Portal; school prints certificates

Materials Needed

• School must have CEMC school account
• Contest question booklet
• Answer sheet (paper or online)
• Permitted aids as specified (varies by contest)
• Scantron forms for paper contests

Timeline

Registration opens in September for the upcoming contest year. Individual contest deadlines vary: November contests (Gauss) have October ordering deadlines; February contests have January deadlines; April contests have March deadlines; May contests have April deadlines. Contests run throughout the school year (November through June). Students should begin preparation 4-8 weeks before their target contest.

Cost

Contests are fee-based; schools pay a contest fee per student (specific pricing not disclosed in public materials)

What Judges Look For

• Problem-solving accuracy and approach
• Mathematical reasoning and logic
• Computational accuracy
• Time management (contests are timed)
• Creative problem-solving strategies
• Understanding of mathematical concepts rather than just memorization

Scoring

Contests are scored based on correct answers. Top performers receive recognition in publicly accessible honour rolls, awards, and certificates. Specific rubric details vary by contest but emphasize accuracy of solutions.

Common Mistakes

• Poor time management—spending too long on difficult early problems and running out of time for easier later ones
• Careless computational errors despite understanding the concept
• Not reading problems carefully or misinterpreting what's being asked
• Not showing work or partial credit strategy
• Insufficient practice with past contests before attempting competition
• Attempting contests below skill level without adequate challenge
• Not understanding the specific contest format and allowable aids

Acceptance Rate

Not applicable; all registered students who show up can write the contest. No acceptance/rejection mechanism—schools order contests for their students

Applicants

Approximately 300,000 students participate annually across 85+ countries; specific numbers per contest vary

Winners / Selected

Not a 'winners only' competition. All participants receive results and recognition if they score highly enough for honour rolls and awards. Top performers receive certificates and public recognition.

• Start preparation 4-8 weeks before your target contest
• Work through ALL past contest papers (5-10 years back minimum) to understand format and difficulty progression
• Time yourself during practice—contest pacing is critical; most students run out of time
• Understand your specific contest's allowed aids (calculators, formula sheets, etc.) and practice with those exact tools
• Focus on problem-solving strategy, not just getting the right answer—understand the 'why' behind solutions
• Work on early problems quickly and accurately to build confidence; harder problems come later
• Double-check arithmetic—careless errors cost points
• If stuck on a problem, move on and return to it if time permits; don't waste 15 minutes on one problem
• Use the CEMC's free online tools: Problem-Set Generator for randomized practice, Math Courseware for concept review, Preparation Materials for Euclid/CSMC
• Form study groups to discuss solutions and strategies with peers
• Request CEMC Visits Schools if your school qualifies—experts conduct free problem-solving workshops
• Review solutions to past contests carefully, especially problems you got wrong—this builds understanding
• Get comfortable with the types of problems emphasized in your specific contest (each has slight variations in style)
• Practice mental math and quick estimation to catch impossible answers
• Read contest supervisor instructions carefully on contest day to avoid disqualification for aid violations

How to Prepare

• Determine which contest matches your grade and ability level
• Download and solve past contests (minimum 5-10 years, ideally 15+)
• Use the CEMC Problem-Set Generator to create randomized practice sets from past problems
• Study the official solution booklets for problems you miss or find difficult
• Take full-length timed practice tests mimicking actual contest conditions
• Review and strengthen weak areas using CEMC Math Courseware (free online modules)
• For advanced contests (Euclid, CSMC), use official preparation materials and work through proof-based problems
• Join or form a study group to discuss strategies and solutions
• Track your progress across multiple practice attempts to identify improvement areas
• Request a CEMC Visits Schools workshop if available in your area
• Practice with exact aids (calculator type, formula sheets) allowed on contest day
• Do 3-4 full-length mock tests in the 2 weeks before the actual contest
• Review test-taking strategy: pacing, which problems to prioritize, managing anxiety

Resources

• CEMC Past Contests Library (free online): cemc.uwaterloo.ca/contests - full archive of past contests and solutions
• CEMC Problem-Set Generator (free): Creates randomized practice problems from past contests
• CEMC Math Courseware (free): Online modules covering key concepts for each contest level
• CEMC Euclid & CSMC Preparation Materials (free): Detailed guides and practice sets for advanced contests
• CEMC Visits Schools Program (free): On-site problem-solving workshops led by CEMC experts
• Contest Supervisor Portal (school access): Teachers can access past results, trends, and student performance data
• r/ApplyingToCollege, r/learnmath Reddit communities: Students share strategies and tips
• YouTube channels featuring math competition prep (search 'CEMC prep' or 'Pascal/Cayley contest')
• Textbooks on contest math: 'The Art and Craft of Problem Solving' by Paul Zeitz, 'Problem Solving Strategies' by Arthur Engel
• Khan Academy: Free videos reinforcing foundational concepts tested in CEMC contests

Time Needed

Minimum 20-30 hours of focused preparation (4-6 weeks at 5-7 hours/week for casual participants). Serious competitors aiming for honour roll/awards invest 50-100+ hours (8-12 weeks at 6-8 hours/week). Top-tier preparation for advanced contests (Euclid/CSMC) requires 100-200+ hours across several months.

Successful CEMC competitors typically: (1) have strong foundational math skills matching or exceeding their grade level; (2) engage in regular practice with past contests (minimum 5-10 hours of focused prep); (3) demonstrate comfort with non-routine, multi-step problem solving; (4) manage time effectively during contests; (5) are motivated by intellectual challenge rather than pressure; (6) belong to schools with strong math/STEM cultures; (7) participate multiple years, improving incrementally; (8) score in top 25-50% nationally to earn honour roll recognition; (9) often prepare further for advanced contests like Euclid or CSMC; (10) frequently go on to pursue math/CS at university and cite CEMC as formative to their academic trajectory.

CEMC participation is viewed positively in college admissions, especially for students applying to math, computer science, or engineering programs. Top performers (honour roll, awards, strong scores on advanced contests like Euclid or CSMC) demonstrate genuine math/CS ability and stand out on applications. US and international universities recognize CEMC's prestige and rigor as equivalent to or superior to AMC/AIME in quality and international reputation. Participation signals: (1) serious interest in STEM; (2) problem-solving maturity beyond typical coursework; (3) willingness to challenge oneself intellectually; (4) familiarity with competitive mathematics. However, CEMC is less universally known in the US than AMC, so students should contextualize results for US admissions (noting CEMC's 60+ year history, 300,000+ annual participants, 85+ country reach, and University of Waterloo's reputation). Especially valuable for Canadian students applying to Canadian universities (where CEMC carries substantial weight) and for international students applying to institutions with strong math/CS programs.

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