Reshebnik Rabochej Tetradi Po: Biologii 9 Klass Mashhenko Borisov

Online platforms offer digital versions of these "reshebniks," allowing students to check their work by page number or exercise:

The chemical composition and structure of the cell.

: Features ready-made laboratory works specifically for the 9th-grade curriculum.

Basic principles of heredity and the modern directions of biological science.