内容简介
WiththeSchoolInventionFaircomingup,Samisdeterminedtoinventthebestinvention.First,hebuildsarobotthat’llcleanthetoilet(butitrefuses).Hetriesafartfan(butthatjustcreatesamessatlunch).WillSamcometothefairempty-handed,orwillhecreatesomethinggreatandwinaprize?