The Mailbox :  Primary. 

 - Feb./Mar. 2004 
 - Greensboro, NC :  The Education Center, Inc,  2004. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Henry and Mudge--Rylant, Cynthia<br/>Ralph S. Mouse--Cleary, Beverly<br/>Fractions<br/>Addition<br/>multiplication<br/>Sinking and Floating