Description Why are picture cards so great? Around 18 months of age, children experience the most explosive period of language acquisition in their entire lives. During this stage, kids soak up new words like a sponge absorbing water, learning language at an incredibly rapid pace. Picture cards show familiar everyday objects alongside their names, helping children build vocabulary while also developing their thinking skills. And since the cards aren't bound together like a book, active little ones can enjoy a wider variety of play activities with them.