When you play with your toddler, look for opportunities to ask questions about numbers. For example, ask your child "How many blocks do you have?" or "What number is on the block?" Do not get frustrated or expect your child to respond. Instead, answer the question for your child. Respond with, "There are three blocks. One, two, three," or "this block has the number four."
Frequent repetition works wonders when it comes to memorization. Count out loud with your child at every opportunity to practice counting. When your child buttons her jacket, count how many buttons are on the jacket. When you wash his hair in the bathtub, count how many cups of water you use to rinse his hair. When your child puts his shoes on, count the shoes.
Each day, sing songs with your child about numbers. Many preschool-aged songs feature numbers but may benefit toddlers just as well. Rhyming and musical sounds make memorization easier for many children and will help your child remember his numbers. Websites such as mathmadness.org and songsforteaching.com offer a variety of song lyrics you can use to teach your toddler. (See Resources 1,2.)
Take time to point out numbers to your child that you come across. Point out the numbers on your telephone and say the name of each number. Notice the numbers on street signs or even on the front of your house. Carefully pronounce each number and point at it so your child begins to learn what each number looks like.
Take advantage of number worksheets or flash cards to practice number recognition with your child. Print off number worksheets or coloring pages with your child and let her draw on the page. Repeat the name of the number as your child draws. Your child may appear to be uninterested in flash cards, but regular viewing of numbers will help her to remember what each number is called and what order the numbers should be in.