These thematic pictures of Ягоды are analogous to a visual dictionary. The theme "Ягоды" 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 czech language that is not your native language.
To expand your czech language vocabulary on the "Ягоды" topic, flashcards games are the best way:
make memory with "Ягоды"
assemble puzzle with Ягоды
make a memory chain or group Zelenina images by color, size or other attributes