内容简介
OneSaturdayatthebeach,Laura,Juan,andSarahdecidetohaveasandcastlecontest.Asthetiderises,thewallsgetlonger,thetowersgettaller,andthemoatsgetdeeper.Thefriendsmeasuretheirsandcastleswithspoons,shovels,andbarefeetuntilLarrythelifeguardandhistapemeasuresurprisethemall.