Quantik. Almanac for curious. Issue 5

The almanac contains materials from six rooms of the journal Kwantik for the first half of 2014. The book includes entertaining issues and tasks in mathematics, linguistics, physics, chemistry, biology and other natural sciences, materials of mathematical olympiads, illustrated stories about the world, puzzles, mathematical comics, “home -made” and much more.
For students of grades 4-8 and their parents, secondary school teachers, lyceums and gymnasiums, leaders and participants in mathematical circles, as well as for all those who are interested in scientific and cognitive literature.
The previous edition was published in 2015.
The compilers: A. S. Berdnikov, S. A. Dorichenko, D. M. Kozhemyakin, I. A. Makhovaya, A. B. Menshikov, A. Yu. Perepechko, M.V. Prasolov, G. B. Feldman.
2nd edition, fixed