The principle of the permanence of the rules of calculation is contrasted with the concretization permanence principle. Both apply to situations where some arithmetical operation known to children for numbers of a certain kind is to be extended to include further numbers. (MNS)

Why should schools have a Family Math Night? It helps students learn essential math concepts. It gives parents a chance to serve as models of motivation, persistence and competence. It promotes math success in a supportive setting. With its step-by-step directions and suggestions for both teachers and parents, this book takes the worry out of…

Supplementary instructional aids for unit four of Spanish as a Second Language for second graders, including visual aids and ditto masters for seatwork by students, are contained in this revised supplement. A teacher's guide corresponding to this unit gives the timetable for when these materials are to be used. Illustrations and worksheets are…

Theme of this Spanish as a Second Language unit for grade three is the communities of the nation. Learning and assessment activities in kits 29-32, each designed for two to three weeks of teaching, are intended to provide the English-dominant child with structures and vocabulary for effective communication in a bilingual environment. Activities…