If you would like a fun review option, I HIGHLY recommend checking out abcya.com. Online play is free. The Fraction Fling game is fun. There are also fraction tiles that your child can use to explore. (See the top screen shot above.) Your child can drag fraction tiles to the workspace to find equivalent fractions or to compare the sizes of fractions. Another activity which would provide excellent practice is Measuring. (See the bottom screen shot.) Have your child try measuring in centimeters to the nearest half-centimeter. Your child could also measure in inches to the nearest half-inch or the nearest quarter-inch.
We've just started our geometry unit. This week, we worked on lots of vocabulary. We learned about points, lines, line segments, angles, and triangles. The kids had fun using sticky notes as "right angle testers" to find right, obtuse, and acute angles around the classroom.