Fourth Graders are expected to extend understanding of fraction equivalence and order. Marilyn Burns' Do the Math-Fractions-A is a great program to help with this.
The whole program consists of hands-on, visual manipulatives of fractions. Students play games and visualize the fractional parts within one another. We talk about mixed numbers, improper fractions, and different ways we can represent equivalent fractions.
The students look forward to coming in each day. I even had one of the fourth grade teachers tell me that one of our students was upset when he thought our group was going to end early one day.
Through games, the students build fractions, take apart fractions, and compare fractions. We also work on adding and subtracting fractions. It is all visual though and it is amazing how the students can really see the fractional parts within other fractions. Plus they are just excited to be here and working with fractions. Having students focused and engaged, it just doesn't get better than that!