You can find these workbooks or fragments of them at several major online retailers and educational resources:
You can purchase complete sets on platforms like Ozon . tetrad dlia 3 klassa po okruzhaiushchemu miru garmoniia s
The workbook for (3rd Grade) for the "Garmoniya" (Harmony) educational system is authored by Olga Poglazova and Vitaliy Shilin . You can find these workbooks or fragments of
Video walkthroughs for completing assignments can be found on RUTUBE and GDZ platforms. tetrad dlia 3 klassa po okruzhaiushchemu miru garmoniia s