“Ilostmysock!”saysFox.“Haveyouseenit?”SobeginsOx'sridiculousattemptstohelpFoxfindhismissingsock.HepresentseachnewoptionjustbeforethepageturnsothereaderhasamomenttodecideforhimorherselfwhetherOxhas,infact,foundFox'ssock.Atitsheart,ILostMySock!isthestoryofafunnymisunderstandingbetweenfriends.Butit'salsoaboutpattern,color,andshaperecognition;comparingandcontrasting;andobjectidentification.Masteryoftheseskillsenrichesachild'svocabulary,prepareshimtounderstandlettersandnumbers,andhelpshimgainabettersenseoftheworldaroundhim.Elio'sbold,geometriccharacterdesignsfurtherreinforcetheearlymathconceptshintedatinthisbook.