Make your next grocery store visit fun for the kids too. Turn your grocery-shopping list into a set of index cards. Before leaving home, have your child flip through the cards and say each word with them. When you arrive at the store, start with the first card and if time, make a scavenger hunt game to find the item. If limited time, get to the correct aisle and ask them to find the item. Once they locate it, tell them how many of the item you need and have them put them in your basket and put the card aside.
Talk about amounts and the cost of items. Consider other math connections like weighing the food if there are scales around. Look at the numbers on the items. Compare a gallon of milk to a half-gallon or a quart. Which is more, how many quarts make up a gallon, etc?
Use the produce aisle to examine colors, shapes or even countries of origin! Where are the bananas from? What fruit was grown from a seed? How many different colors and kinds of apples can you find? Etc. The list is limitless.