Live Streams

(Excerpts from Weekly Show)

For several years Po-Shen Loh routinely traveled the country (and world) on a weekly basis, giving math talks in different cities to increase interest and ability in math. When COVID-19 (the coronavirus) made it difficult to host in-person events, he launched a free weekly YouTube Live math show in early 2020. In response to sudden school closures, he is now also running the free daily YouTube Live stream Ask Math Anything, with Po-Shen Loh, in which he interactively answers math questions asked in real-time via YouTube Live. All upcoming sessions will be announced here on this page, with automatic notifications sent to subscribers to the Official YouTube Channel of the Daily Challenge with Po-Shen Loh.

Due to YouTube's legal restrictions, participation in all live streams is meant for people 13 years of age or older.

This button to join the active live stream will be updated 15 minutes before the stream start time, and all streams will also appear at that time on our Official YouTube Channel.

Daily: Ask Math Anything, with Po-Shen Loh

In each 60-minute weekday live stream, Po-Shen Loh invites students, teachers, parents, and anyone interested in math to post math questions in the YouTube Live interactive chat. He will improvise mini-lessons around them, showing how mathematical reasoning is interconnected, and how learning to think creatively about math can actually simplify the task of learning math itself. He gives preference to questions in Algebra 1, Geometry, and Algebra 2, as they are the gateways to mathematical fluency.

Format. This stream is intentionally friendly and informal. Po-Shen Loh will pick out the most mathematically interesting questions in the chat in real time, and interact with the audience. None of the mini-lessons will be prepared in advance, to give the session a more lively feel.

Next Show Times (all times USA Eastern)
Wed Mar 25: 3:00pm – 4:00pm
Thu Mar 26: 3:30pm – 4:30pm
Fri Mar 27: 4:00pm – 5:00pm
Mon Mar 30: 3:00pm – 4:00pm
Tue Mar 31: 2:30pm – 3:30pm
Wed Apr 1: 3:00pm – 4:00pm
Thu Apr 2: 3:30pm – 4:30pm
Fri Apr 3: 4:00pm – 5:00pm

This daily stream will continue to operate based upon the level of interest, with the potential to expand in scope, again depending on interest.

Weekly Show

In each 45-minute weekend show, Po-Shen Loh talks to parents and students about learning math more deeply. The goal is to show how it is fun to think creatively about math, and also to provide a global platform for real-time discussion and interaction. These weekend shows are designed for students who are already doing very well in their math class at school, and seek more challenge.

Format. The first 15 minutes will introduce and discuss an interesting math problem specifically chosen to exemplify mathematical thinking. The remaining 30 minutes will be a free-ranging Q&A session on any topic around learning math.

Next Show Time. 8:00pm – 8:45pm Eastern Time (USA), on Saturday, March 28, 2020 (Episode 9). Equivalently, 11:00am Sydney Time on Sunday, March 29, 2020.

PhD-Level Extremal Combinatorics Course

To protect the community from the coronavirus, Carnegie Mellon University has moved all instruction online. From 1:30pm – 2:20pm on Mondays, Wednesdays, and Fridays from Wed Mar 18 to Fri May 1, Professor Loh's PhD-level course may also appear on this live stream channel. He unfortunately will not be able to respond to the YouTube Live chat, because he will be answering real-time questions from enrolled CMU students via the university's Zoom subscription. This course is quite advanced, and is primarily meant for university graduate students. However, he will share it here in case people are curious what math graduate students study.

Math for America Mini-Course for Teachers: Why Matrices?

Each Spring, Po-Shen Loh offers professional development mini-courses at Math for America, an organization committed to teachers, which builds and supports communities of teachers of Science, Technology, Engineering, and Math. He was scheduled to give 3 mini-courses this Spring, but their in-person meetings were canceled due to COVID-19. He will live-stream them instead from the Daily Challenge studio. Math for America will provide an additional link to an interactive Zoom meeting to their official participants, who will then also be able to ask and answer questions by keeping both YouTube and Zoom open at the same time. The general public is welcome to watch the YouTube Live stream, which will send only the video and audio from Po-Shen Loh. These sessions are designed for math teachers who teach or are curious about matrices (often taught in Algebra 2 or Pre-Calculus).

Topic. Matrices can seem like mysterious objects. Why is the formula for matrix multiplication so strange? Are they good for anything besides solving systems of equations? Why is the determinant so complicated? We will discuss all of these topics, and more, to hopefully have more explanations for our students about why they too should care about matrices. This course will include problems which at first may not appear to have any connection with matrices, as well as discussions about the theory of matrices themselves.

Mini-Course Times (all times USA Eastern)
Tue Mar 24: 5:30pm – 7:30pm
Tue Apr 7: 5:30pm – 7:30pm
Tue Apr 21: 5:30pm – 7:30pm

Stay Notified

To stay notified about future Live sessions, please subscribe to the Daily Challenge with Po-Shen Loh YouTube Channel.

To stay notified about future sessions in general, please subscribe to the email newsletter which sends timely information about math education and contest deadlines, every two weeks. If your language preference is Chinese, please follow the WeChat Public Account: 罗博深数学.

2020 Expii, Inc.