Following Tanya Khovanova's Math Blog's news feed is very easy. Subscribe using the "follow" button on the top right and if you want to, choose the updates by topic or tag.
We will deliver them to your inbox, your phone, or you can use follow.it like your own online RSS reader. You can unsubscribe whenever you want with one click.
Keep up to date with Tanya Khovanova's Math Blog!
Tanya Khovanova's Math Blog: Tanya Khovanova's Math Blog
Is this your feed? Claim it!
My goal is to expand my students’ minds. So, though my STEP program is about mathematics, I sometimes give problems from other areas for homework. Here is a recent physics one.
Puzzle. You have a brick of 1 kilogram. How does the weight of the brick change during the year?
As always, my students generated tons of ideas about what can inf...
Here is a probability puzzle I heard from my son Sergei. We even included this puzzle in our book Mathematical Puzzles and Curiosities. Our book includes the answer but omits the details. So, this blog post is devoted to said detail...
I wrote a book. This is my first book, so I am very proud. I wrote it together with two brilliant puzzle lovers, Ivo Fagundes David de Oliveira and Yogev Shpilman. The book is published by World Scientific and is available for pre-order: Mathematical P...
I recently gave my STEP students a question from our old 2014 PRIMES entrance test.
Puzzle. John’s secret number is between 1 and 216 inclusive, and you can ask him yes-or-no questions, but he may lie in response to one of the questions. Explain how to determine his number in 21 questions.
Here is the standard solution. We start by askin...
My team, Death and Mayhem, organized the 2025 MIT Mystery Hunt. The hunt was a great success. Many people commented that it was the best mystery hunt ever.
This year, we added a new and interesting feature. Not only were teams allowed to choose which puzzles to unlock, but they were also given a short description of each puzzle in addition to its title. So, small te...
