Something as mundane as folding the laundry can be turned into an opportunity for teaching number sense. Sort the articles of clothing into different piles -- shirts, pants and socks, for instance. Count each item in the different piles with your child. Once the items are folded, place them in piles for the person whom the clothing belongs to and count each item in the pile.
Provide your child with an opportunity to develop number sense while making breakfast, lunch, dinner or snacks. On a piece of paper, write out the numbers one through five. Give your child with a handful of pasta, popcorn, cereal or any other type of food that is easy to manipulate and isn't messy. Have your child place the correct pieces of food underneath each of the numbers. For instance, under the number one she should place one piece of popcorn, under the number two she should place two pieces of popcorn and so forth.
Even playtime can be turned into an opportunity for teaching number sense. Spread out a variety of toys on the floor -- cars, for example. Divide the cars into separate piles that feature a different number of cars -- a pile that has two cars, a pile that has three and a pile that has five. Ask your child to determine which pile is the biggest by counting the number of cars in each one. Review which pile is the smallest, which is the middle-sized pile and which is the biggest and explain why.
Teach number sense with arts and crafts. Print individual numbers on index cards. Lay the index cards out and give your child stickers, markers or crayons. Have your child place stickers or draw pictures on each index card that corresponds with the numbers written on them. Provide guidance, if necessary. Once each card has stickers on it or is illustrated, gather them in a pile and shuffle them. Spread the cards out and have your child place them in the correct numerical order.