Fun tricks for everybody

A two hour long free course on fun tricks in mathematics

Image precalculus part 1

Prerequisites

High-school maths, mainly arithmetic.

Curriculum

This course concentrates on a few interesting and fun examples of derivations of formulas and their geometrical interpretation.

Math: Fun tricks for everybody

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A detailed list of the lectures can be found in a PDF outline by clicking this panel.

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Course Objectives & Outcomes

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Creative problem solving, with fun tricks and geometrical illustrations of the results.
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How to derive the formulas for partial sums for two very important examples of arithmetic progressions: 1+2+…+n and 1+3+5+…+(2n-1).
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How to derive some less known formulas, using cool computational tricks.
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You will learn (from an article) how to convert infinite periodic decimal expansions into fractions, by smart substitutions and solving linear equations.
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You will learn (from an article) about an interesting family of nested square roots and how to prove that some members of this family are… integers!
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How to derive the formula for the sum of squares of all natural numbers from 1 to n.
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How to derive the general formula for partial sums of geometric progressions; an important example of the sum of all the natural powers (from 1 to n) of 1/2.
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How to prove divisibility in some simple cases, using very basic (but fun) reasoning.
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You will learn (from an article) some basics about continued fractions (CF), and how to recognise irrational surds from their infinite periodic CF-expansions.
Faith A.
Udemy student
THANKS
Jesús N.
Udemy student
The course is outstanding! The content is comprehensive and well-structured, covering all aspects in mathematics tricks. The instructors are knowledgeable and supportive, making complex concepts easy to understand. The multimedia resources make learning engaging and effective. Highly recommended for anyone looking to improve their mathematics skills!
Tim K.
Udemy student
I love Professor Hania's classes. She generously offers 3 free courses and in a Bonus Lecture for the free courses she is providing coupon codes that give big discounts for her paid courses (as of 10-6-25). I learned a lot in this class and I appreciate Hania's slow, step-by-step, clear, patient approach. I feel like she wants me to know math! Thank you, Hania! (I'm slowly working through the Discrete Math 1 course and enjoying it : )
Andrés E.
Udemy student
Great course, don't hesitate to buy Hania Uscka-Wehlou courses... is a great instructor/teacher!
Alejandro S.
Udemy student
Excelente elección, me gustó la forma en que explica y los subtítulos son exactos. Me gustaría tomar otros cursos con la instructora.Machine translation: Excellent choice—I liked the way she explains things, and the subtitles are accurate. I'd like to take other courses with this instructor.
Paul H.
Udemy student
The way you teach is so important because you demonstrate the principles and thought process. Some people teach math just by going through the steps to a solution, but what is often missed is the art of the demonstration. I truly appreciate how you guide us to the discovery which is quite difficult to do without mechanically drawing out the conclusion. Sometimes I find that I will pause your video and I might think for an hour or even I stop the lesson. It might be that I need to really think about what you just did. Or I don't quite understand so I don't want to just overlook it. So I may do something else. At some time later it will come to me. I think about something that you said maybe even a month ago from the time I last studied your lesson and I find some pearl. Just amazing!!! That is when you know that you are truly a superb instructor. I hope you will continue to teach us because there is no one quite like you.
Eduardo F.
Udemy student
Eexcelente curso sobre trucos matemáticos y demostraciones. Aprendí bastante y lo recomiento al 100%.Machine translation: An excellent course on math tricks and proofs. I learned a lot and recommend it 100%.
Gohar G.
Udemy student
Thank you so much for a nice course
Stephen C.
Udemy student
Clear explanations of interesting (almost magical) topics.
Warren T.
Udemy student
Yes, it now makes sense. When I first saw years ago at Uni, didn't get it!