Introduction

Reviews

From our students

J Feng

5 star rating

“The best math course I've ever taken. It's very enjoyable. Everything was clear and there was no confusion at all. ”

“The best math course I've ever taken. It's very enjoyable. Everything was clear and there was no confusion at all. ”

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Irina Sachelarie

5 star rating

“I have done several online courses with AOPs and mymathcounts. I felt that your course was the best of them all. I liked that your solutions were very smart and clear. It made me think. I also liked the fact that you gave multiple explanations to ...”

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“I have done several online courses with AOPs and mymathcounts. I felt that your course was the best of them all. I liked that your solutions were very smart and clear. It made me think. I also liked the fact that you gave multiple explanations to solve the same problem. I am looking forward to the next Module. I would give 5 stars.”

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Ellen Wei

5 star rating

“This module taught me everything I needed to know about middle school math! Would recommend!!! :D”

“This module taught me everything I needed to know about middle school math! Would recommend!!! :D”

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Katherine Wong

5 star rating

“The questions are very challenging and the explanations are very clear. I like these modules!”

“The questions are very challenging and the explanations are very clear. I like these modules!”

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Andrew Truong

5 star rating

“Geometry Tools is a great course if you want to learn more about Geometry. Professor Po Shen Loh teaches a lot of great tricks that you can use to solve some difficult problems. I have learned a lot of tricks and tips, including how to square a ...”

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“Geometry Tools is a great course if you want to learn more about Geometry. Professor Po Shen Loh teaches a lot of great tricks that you can use to solve some difficult problems. I have learned a lot of tricks and tips, including how to square a number, that ends in 5, in just a few seconds. After I completed only 15% of the course, I learned a lot of material that I had not learned in school. I improved greatly on most of my geometry tests. I am very happy about my improvement in Geometry and plan to take the Module 3: Combinatorics Tools and Module 4: Algebra Tools. Thank you, Professor Po Shen Loh, for taking your time to make videos to try to help younger people, and I hope you make more courses! ”

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Emily Hoang

5 star rating

“This is a very fun (but hard!) course. I like how the problems are given to introduce new concepts and the solutions are very clear, and how even though there's a lot of stuff covered, it's presented in only a few problems.”

“This is a very fun (but hard!) course. I like how the problems are given to introduce new concepts and the solutions are very clear, and how even though there's a lot of stuff covered, it's presented in only a few problems.”

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Wilson Han

5 star rating

“This course was incredibly helpful and enjoyable, and helped me think deeper in all fields of math, including combinatorics, geometry and much more.”

“This course was incredibly helpful and enjoyable, and helped me think deeper in all fields of math, including combinatorics, geometry and much more.”

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Gracie Grace

5 star rating

“Best learning system ever! I love how we do only a few questions at a time and figure it out in different ways instead of rushing everything up. I got some questions wrong, but that's how I learn! Keep up the hard work!”

“Best learning system ever! I love how we do only a few questions at a time and figure it out in different ways instead of rushing everything up. I got some questions wrong, but that's how I learn! Keep up the hard work!”

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Xiaodi Zhu

5 star rating

“This course has really enriched my understanding of math. It is very fun, too. I look forward to it every day!”

“This course has really enriched my understanding of math. It is very fun, too. I look forward to it every day!”

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shingki mo

5 star rating

“this is great because it is fun and challenging. not too challenging, just enough for me to get the idea. straight A in being the best.😊😊😊😊😊😊😊😊👍👍👍👍”

“this is great because it is fun and challenging. not too challenging, just enough for me to get the idea. straight A in being the best.😊😊😊😊😊😊😊😊👍👍👍👍”

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Harold Fu

5 star rating

“This is a nice course for beginners with a teacher that is really good at teaching.”

“This is a nice course for beginners with a teacher that is really good at teaching.”

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Callie Deng

5 star rating

“This course was clear and amazing and easy to understand”

“This course was clear and amazing and easy to understand”

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No need to register, take a peek at our courses NOW!

Free Demo


Daily Challenge with Po-Shen Loh is an online course series that provides a complete learning experience, containing interactive videos taught by the world renowned mathematician, Dr. Po-Shen Loh, with engaging embedded questions, novel practice problems, regular exams and score reports, as well as timely academic support from our teaching assistant team. It is a perfect daily mental workout which introduces a new world of challenging mathematical thinking.

Through an original teaching style that develops creative thinking, students will discover the rich world of math that they can build from a basic foundation.

The course sequence is designed to provide systematic coverage of concepts when taken in order. Contact us for free consultation at course-consulting@poshenloh.com.


Course Structure

  • Module 0: A sampler of the 5 main areas of mathematics: geometry, combinatorics, algebra, number theory, and probability

  • Module 1: Lays a foundation for Algebra, enabling students to explore more useful and deeper topics covered in this course series

  • Modules 2–6: Each module will rapidly cover fundamental math competition tools used in each of the 5 subject areas

Course Features

  • Ready-to-use: complete solution is convenient for busy families, teachers, and coaches, as students can learn on their own

  • Expand horizons: a step beyond the regular curriculum, focusing on depth instead of learning concepts early

  • Challenge level: comparable to MATHCOUNTS Chapter level or AMC8 / AMC10 problems

  • Course presentation: engaging, creative, and challenging, with no repetitive practice

  • Self-paced learning: courses remain available to review for 365 days after purchase

  • Discussion with peers: provides environment and motivation to learn more and aim higher

Daily Challenge Courses

Free Mock Tests

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About

All courses are taught by Po-Shen Loh, a social entrepreneur who works across the full spectrum of mathematics and education, in diverse areas around the world. He is the founder of the free personalized learning platform expii.com, an education technology social enterprise which algorithmically curates openly licensed math and science lessons and problems contributed by the world. Sales of these online courses support the development of these social initiatives.

To create these lessons Loh draws from his experience as a mathematics professor at Carnegie Mellon University and also as the national coach of the USA International Mathematical Olympiad team. His research and educational outreach takes him to cities across the world, reaching over 10,000 people annually through public lectures and in-person events, and he has featured in or co-created videos totaling over 5 million YouTube views.

Professor Loh has been continually involved in math competitions since he was a contestant in the 1990's. He ranked 3rd at the National MATHCOUNTS competition in middle school, and won a silver medal for the United States of America as a contestant at the International Mathematical Olympiad in high school. He can be followed on Instagram (@poshenloh), Twitter (@poshenloh), WeChat (罗博深数学), and Weibo (@罗博深).

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