I love these flash cards. We started signing with my daughter when she was 5 months old; she did her first signs back at 10 months; now she's 18 months and still going strong with signing. We do not allow her to watch TV so we're reliant on what we can teach her, board books (which are mostly poorly designed when it comes to babies or very young toddlers), and now, these cards.
I LOVE these cards! The cards and big and fairly sturdy, and the words presented are a very good selection for babies. Here's how they are designed:
-- One one side, each card has a clear, colorful picture of the object being signed about, often with a baby (for example, "Light" shows a young toddler turning on a lamp).
-- On the back side, there is a picture of a woman performing the sign, and if needed, a brief text description of how to do the sign.
-- All cards show the ASL sign. A couple also show popular alternates for signs that are particularly difficult for babies, such as "help".
-- The word for each sign is printed in large, clear block letters on both sides of the card.
I have looked at tons and tons of board books and not been completely happy with any of them. but I love, love, LOVE these cards. They are wonderfully designed to be clear and attractive to very young signers, and are study enough that babies and toddlers can play with them without causing too much damage. My daughter has knelt or crawled on some of them more than once and they haven't really even been dented yet.
These cards definitely deserve two thumbs up.