In Year 2, we learn how to find 1/2, 1/3, 1/4, 2/4 and 3/4 of numbers and shapes.
You could give your child a square of paper and see how many fractions they can make by folding the paper then draw along the fold lines in different coloured pens/pencils to show the difference or shade the different fractions.
Have a selection of toys and get your child to split them in half/quarters/thirds etc.