Children learn new vocabulary words best when they are presented in sentences in the context of real world events.  With this in mind, you might want to take your child to the Boonshoft Museum of Discovery to visit the meerkats.  Read this easy-reader, non-fiction book before you go, and again after you return.  'Mammal' (hairy milk drinker), 'burrow', 'groom' and 'predator' are words used in the book that might be new vocabulary for your child.   Tell your child what these words mean in language they can understand.  When you visit the exhibit at Boonshoft, be sure to look for opportunities to use the same words in this new context. Encourage your child to use the words too.  Think of other times when you can use these words.  For example, if your cat is grooming, point this out using the word and asking your child to note any differences in how cats and meerkats groom.  How about when you comb your hair?  The more times you use new words, the more likely your child is to learn them.