Concepts to be developed, objectives, and student instructions are provided for an activity useful as an introduction to or review of Mendelian genetics and sex determination. Universal codes (read by optical scanners at supermarket checkout stands) from soup can labels are used as chromosome maps during the activity. (JN)

Papers focusing on the recommendations of the Sixth International Conference on Chemical Education (presented at the Seventh Biennial Conference on Chemical Education, Stillwater, Oklahoma 1982) are highlighted. Topics addressed included implementing the recommendations in American schools, recommendations with special meaning for high school…

Plate tectonics is the current framework for understanding earth history and processes. Recent progress in this field is discussed, focusing on continental growth, mountain building, hot spots, and mineral depositions. (JN)

Of the 718 graduates of the class of 1950, Bronx High School of Science, at least eight members became PhD physicists (including two Nobel prize winners). A list of these PhD physicists and comments about the school made at a reunion held in New York City (June 1982) are provided. (JN)

Six physics teachers describe their experiences in selecting physics textbooks. Issues addressed include fitting text to students, involving more people in the selection process, need for periodic text changes, text change resulting from physics curriculum study, making text fill student needs, and problems faced when asking for a new text. (JN)

Describes how the Ontario Section of the American Association of Physics Teachers started a "Grade Eleven Prize Physics Contest" to generate interest in physics and recognize outstanding students. Also describes outcomes of contests, adaptation of the contest by Southeastern Pennsylvania Section, and suggestions for others wanting to…

Aphids, often referred to as plant lice, can be found in great numbers on stems, leaves, and flowers of many plants. In many cases these organisms are potentially harmful to their plant hosts. Provided is a description of the annual life cycle of the aphid and an accompanying transparency master. (Author/JN)

Information on the morphology of tapeworms (cestoidea) is provided. A transparency master illustrating the general structure of the worms is also provided. (JN)