According to psychologist Professor Leslie Rescorla, author of the Language Development Survey, there are 310 words that should be part of a toddler’s vocabulary.

(25 of these words are words that every toddler should be able to use, as they are are among the most common and the first acquired when learning to speak.

As an ESL learner, you might want to know what these words are and check that you know them:-

The 25-word list comprises mummy, daddy, baby, milk, juice, hello, ball, yes, no, dog, cat, nose, eye, banana, biscuit, car, hot, thank you, bath, shoe, hat, book, all gone, more and bye-bye.

The 310-word list seems to be under copyright.)