Capacity can be a hard measurement topic for kids. This flipchart, created with ActivInspire software for the Promethean Board, explores the meaning of capacity, the different measures of capacity, and converting capacity measures. The conversion section is based on the Big G model, but you could always switch those pages to the Gallon Guy or whatever it is that you use.
The flipchart has 19 pages that include the opportunity to use ActivVotes or ActivExpressions, revealers, hidden pictures,