Middle School Challenge Science 11-piece set. Not sold separately. 2014 Shinken Zemi. For review, basic training, and practice. Problems and answers on chemical changes and atoms/molecules, pressure, electricity, current, voltage, etc. Some writing, some unused. Name written in marker, with erasure marks. Please understand that this is a used item with scratches and fading due to home storage. #ShinkenZemi #Challenge #MiddleSchool #Science #Course #Chemistry #Atom #Molecule #Electricity #Pressure #HighSchoolEntranceExam #Exam #Summary #BasicTraining #HighSchoolEntranceExam #HighSchoolExam