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#
Math Circles Presentations

## 2021 - 2022 Weekly Presentations and Exercises

## Previous Weekly Presentations and Related Student Exercises

Math Circles is a free weekly enrichment activity for grade 6 to 12 students organized by the Faculty of Mathematics of the University of Waterloo.

Information about the audience, dates and location.

Listed in the tables below are summaries of the weekly presentations and related student exercises for the current year. Links to materials from previous years are below the tables. These resources are provided for both students and teachers. Please use them!

Fall 2021 | |

Junior Grade 6 |
Oct 6/21 Irrational Numbers [pdf, prob set, solns] Oct 13/21 Divisibility [pdf, prob set, solns] Oct 27/21 Probability [pdf, prob set, solns] Nov 3/21 Linear Relations [pdf, prob set, solns] Nov 17/21 Computer Science I [pdf, prob set, solns] Nov 24/21 Computer Science II [pdf, prob set, solns] |

Junior Grades 7 & 8 |
Oct 6/21 Probability [pdf, prob set, solns] Oct 13/21 Systems of Equations [pdf, prob set, solns] Oct 27/21 Sequences [pdf, prob set, solns] Nov 3/21 Polygonal Numbers [pdf, prob set, solns] Nov 17/21 Counting Systems [pdf, prob set, solns] Nov 24/21 Game Theory [pdf, prob set, solns] |

Intermediate |
Oct 6/21 OEIS [pdf, solns] Oct 13/21 OEIS II [pdf, solns] Oct 27/21 Angles [pdf, notes, prob set, solns] Nov 3/21 Angles and Circles [pdf, notes, prob set, solns] Nov 17/21 Complex Numbers I [lesson video, slides, prob set, solns] Nov 24/21 Complex Numbers II [lesson video, slides, prob set, solns] |

Senior |
Oct 6/21 Game Theory [pdf, solns] Oct 13/21 Game Theory II [pdf, solns] Oct 27/21 Irrationality [pdf, solns] Nov 3/21 Transcendental Numbers [pdf, solns] Nov 17/21 Circles, Ellipses and Astrophysics I [pdf, solns] Nov 24/21 Circles, Ellipses and Astrophysics II [pdf, solns] |

Winter 2022 | |

Junior Grade 6 |
Feb 9/22 Percentages and Applications [pdf, prob set, solns, extension] Feb 23/22 Circles [pdf, prob set, solns, extension] Mar 9/22 Greek Aphabet [pdf, prob set, solns] Mar 30/22 Cryptography [pdf, prob set, solns] |

Junior Grades 7 & 8 |
Feb 9/22 Ancient Mathematics [pdf, prob set, solns] Feb 23/22 Boolean Algebra [pdf, prob set, solns] Mar 9/22 Graph Theory [pdf, prob set, solns, extension] Mar 30/22 Inequalities and Absolute Values [pdf, prob set, solns, extension] |

Intermediate |
Feb 9/22 Linear Diophantine Equations I [pdf, prob set, solns] Feb 23/22 Linear Diophantine Equations II [pdf, prob set, solns] Mar 9/22 Analytic Geometry [pdf, prob set] Mar 30/22 Knot Theory [pdf, prob set, solns] |

Senior |
Feb 9/22 Cryptography I [pdf, prob set, solns] Feb 23/22 Cryptography II [pdf, prob set, solns] Mar 9/22 Cardinality I [pdf, prob set, solns] Mar 30/22 Cardinality II [pdf, prob set, solns] |

Junior Grade 6 | Junior Grades 7 & 8 | Intermediate | Senior |