When your child reads, he or she looks at the written words on a page and decides what spoken words the written words represent. But that doesn’t help him understand what he is reading unless he also knows the meanings of those spoken words.
The collection of spoken words that a child understands is usually called his or her oral vocabulary. The larger a child’s oral vocabulary, the more words he or she will be able to read and understand.
There are many ways to increase a child’s oral vocabulary, and different children learn in different ways. The best way is just to talk together about the people and things that are in your child’s world. You can also build oral vocabulary when you share books, stories, songs and rhymes, and talk about the meanings of words. Games and puzzles can help, too.
Along with these resources, ABCmouse.com offers an extensive glossary with definitions of hundreds words in child-friendly language.