Though most lessons I gave in Russian and Swedish, a few of them were in English. Usually these were preparation to math competitions. A good selection of problems helps much to make a good lesson.

Lessons NYUAD2018

Lessons NYUAD2015

Algebra and Number Theory: pdf    doc

Combinations, Logic and Geometry: pdf    doc

How Could It Happen: pdf    doc

For Beginners: pdf    odt