The Lorentz velocity addition formula for one-dimensional motion presents a number of problems for beginning students of special relativity. In this paper we suggest a simple rewrite of the formula that is easier for students to memorize and manipulate, and furthermore is more intuitive in understanding the correction necessary when adding…

The Soviet Union collapsed more than 20 years ago, but the traces left in occupied countries by this monstrous system still affect the lives of millions of people. Under the glittering surface of newsworthy events that regularly appear in the mass media, there are many other wounds hard to heal. The system of education is one of the social…

Describes a continuous sequence of development of arithmetical and ratio reasoning capacity which very few students now attain in introductory science courses. Sequence progresses from verbal interpretation of ratio of two numbers, to arithmetical reasoning involving division, coupling arithmetical reasoning to graphical representation, and to…

In 1971 and 1972 a group of Ecuadorean evaluators planned and carried out an evaluation of the new textbooks for reading, mathematics, and sciences in the first grade classrooms of 88 schools. A field experiment was designed in which each school was assigned to a test condition: (1) obligatory use of all the textbooks and guides, (2) use of the…

TO MEET THE NEEDS OF THE UNDEREDUCATED WHOSE SKILLS APPROXIMATE FOURTH TO EIGHTH GRADE READING LEVEL AND THOSE FOR WHOM LEARNING ENGLISH AS A NEW LANGUAGE IS THE FIRST STEP IN JOB TRAINING, 20 OCCUPATIONALLY-ORIENTED UNITS OF INSTRUCTION IN READING AND RELATED SKILLS AND A SECTION ON TEACHING THE COURSE ARE OUTLINED. UNITS, PLANNED FOR 20 40-HOUR…

The Massachusetts Board of Education recently adopted a 5-year plan to assist Local Education Agencies (LEAs) in the curriculum areas of reading, writing, arithmetic, science, and computer literacy. However, reduction in funds and staff at the LEA level has decreased the ability of local programs to implement marketing and assistance. This manual,…

These materials were developed in the course of research on "Cognitive Growth through Peer Collaboration." Materials were developed and adapted for teaching spatial reasoning and logical reasoning to fourth grade students. The document contains: (1) descriptions of the various tasks involved; (2) outlines of each of the activities which were…

Ideas for an elementary level interdisciplinary teaching unit which were generated from a drive taken in the plains country of eastern New Mexico are presented. The purpose is to show what could be included in a unit on the immediate environment. In social studies classes, students can read a map of the area of the drive. An interest in history…

New educational products, broadly defined as validated output from education R&D programs designed for practical application, are listed. Some of the products are directed toward educational problems of critical importance; others address themselves to instructional or administrative topics of lower current priority. The products, nominated by…

This book re-examines the dichotomy between the everyday and the disciplinary in mathematics and science education, and explores alternatives to this opposition from points of view grounded in the close examination of complex classroom events. It makes the case that students' everyday experience and knowledge in their entire manifold forms matter…

This textbook is the eighth volume of the bound periodical, "American Journal of Education." This journal was established to enter into a range of education-related discussion and investigation. This volume includes No. 20, March 1860 and No. 21, June 1860. Among the topics covered in these issues are: school architecture; teaching…

Special education is now an established part of public education in the United States--by law and by custom. However, it is still widely misunderstood and continues to be dogged by controversies related to such things as categorization, grouping, assessment, placement, funding, instruction, and a variety of legal issues. The purpose of this…

The catalog lists special education materials identified by approximately 500 special educators (through the Teacher Initiated Materials Evaluation Process) as effective with handicapped and gifted children. The evaluation process is built on the premise that teachers in contact with handicapped children know the most effective materials.…

This book presents case studies of classroom research into the teaching and learning of English, mathematics, and sciences, drawing on the experiences of teacher researchers who, in partnership with their local education agencies and local universities, set out to intervene in key areas of the primary curriculum. After "Introduction: Inviting…

This document contains the fifth volume of the proceedings of the 30th Conference of the International Group for the Psychology of Mathematics Education. Conference presentations are centered around the theme "Mathematics at the Centre." This volume features 59 research reports by presenters with last names beginning between Sac and Zaz:…