These thematic pictures of মানব are analogous to a visual dictionary. The theme "মানব" is split into several parts. For children, especially toddlers from 1 to 5 years old, it is better to divide the sets of cards over several days, or even weeks, so that the information is absorbed better. This is especially true if you are using flashcards to learn bengali language that is not your native language.
To expand your bengali language vocabulary on the "মানব" topic, flashcards games are the best way: