These thematic pictures of Die Nahrungsmittel are analogous to a visual dictionary. The theme "Die Nahrungsmittel" 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 german language that is not your native language.
To expand your german language vocabulary on the "Die Nahrungsmittel" topic, flashcards games are the best way: