Using experiences that children already understand is a good way to help your child understand fractions better.
Children have seen grown ups slice fruit, pizza, cake and pies into smaller pieces lots of times. They are usually very good at noticing if they are getting a smaller slice of cake than their brother or sister too (even if they think they can't do math). This well known experience fits in perfectly with finding out more about fractions.
You can easily cut an apple into halves, quarters and eighths, Cakes or pies can be cut into any fraction size including thirds and sixths. Your child probably knows what a half is when you are cutting up a cake or apple. They just haven't connected what the see on a daily basis with the idea of fractions. If you can help them make this connection you will help their understanding of fractions a lot.
So make sure your child is with you when you are cutting up a snack, cake or vegetables for dinner. Show them what you are doing. Explain to your child about the fraction concepts that are part of preparing food. But use the food as your focus of the talk rather than more technical math concepts. The more you can connect fractions to everyday life the easier and more interesting fractions will be for your child.
There are two problems with using food to teach fractions though. You can't be cutting up food all day. But children usually need to do things lots of times to understand. You also don't want children playing with sharp knives as part of their math learning. There are some good math toys that use this food idea in a way that children can play with again and again. These toys are better than buying books with fraction problems to solve for you child. Wait until they understand the idea of fractions first. If you give them fraction problems to solve too soon you will only make them think math is too hard. Keep your lessons to everyday things at first.