Fraction Jugglers is what I'm using with the boys. We've been using the wooden fraction puzzle that is shown below to check our work, sort of like how cusinaire rods are used with whole numbers. It's funny that I need to use the puzzle more than they do because they seem to be able to picture it better in their heads. I have some other fraction games with the set of games I bought from Right Start Math and I'll be pulling those out too in order to add some variety.
Here is a picture of the fraction puzzle I bought from Right Start. Annalise just played with it one day with no help from me and the next day she was explaining to me how fractions get smaller when the bottom number gets bigger. She explained in excited tones how 1 was bigger than 1/10. She continued to expound on how it was the opposite of counting with regular numbers and that is why they were called fractions.
Thanks to Julie at the Living Math site and the accompanying email list, I'm seeing numbers in a whole different light. I look forward to trying more resources and enjoying our mathematical adventure. I'll continue to post things that we use and enjoy here in hopes that it will encourage others to step out of the workbook/textbook box and have fun learning!