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