内容简介
It'shardwork,takingcareof5littleducks.Butwheneachlittleduckcomeshomewithafriend--oh,no!Nowit'sdoubletheducksanddoublethework.Howcan1littleboygeteverythingdone?Understandinghowtodoublenumbershelpschildrenmasterbothadditionandmultiplication.Fun,friendship,andlotsofducksmakelearningthisessentialskillbotheasyandentertaining.
作者简介
StuartJ.Murphyisavisuallearningspecialist.AgraduateoftheRhodeIslandSchoolofDesign,hehasastrongbackgroundindesignandartdirection.Healsohasextensiveexperienceintheworldofeducationalpublishing.Drawingonallthesetalents,StuartJ.MurphybringsauniqueperspectivetotheMathStartseries.InMathStartbooks,picturesdomorethantellstories;theyteachmath.StuartJ.Murphyandhiswife,Nancy,liveinBoston.