Looking at a single card helps a baby learn to sustain focus on one object, a foundational skill for future learning.
Categorization starts early. Sorting cards into "animals" or "colors" helps babies understand the world around them. What to Look for in a Downloadable Set download flash cards for baby
Standard printer paper is too flimsy and will likely end up in your baby's mouth or crumpled within seconds. Use heavy cardstock (at least 80lb or 200gsm). Looking at a single card helps a baby