I came across a nifty handmade "foldable" at Flikr and thought it would be helpful for my bunch so I made one. I think it's a great way for kids to visualize customary volume conversions. My daughter seemed to like it. It would be great for a math notebook or in a file folder with related material (Still deciding where we'll put it for quick reference/review). I printed it out on colored paper to make it pop!
You can get it from my TpT Store
