Describes a laboratory exercise to demonstrate enzyme activity using gelatin and meat tenderizer. The exercise is adaptable to any grade level. (MA)

Presents experiments to introduce students to the phenomenon of biological rhythmicity and to reinforce the fact that there are differences in the physiology of human beings. (Author/MA)

Discusses what biology teachers can do to improve the reading abilities of their students. Includes a review of the four different reading levels at which all individuals operate. (Author/MA)

Describes the methods and materials needed to make stage and ocular micrometers. These can be used in secondary school and college level biology classrooms. (MA)

The inclusion of Watson's "The Double Helix" in a high school biology DNA unit is described. (BB)

Using aerial photographs to study shrubs biomass allows students to avoid unpleasant working conditions and to study communities that are inaccessible or distant. (BB)

The recently-appointed executive director of the National Association of Biology Teachers describes his responsibilities during the early months of his office. Five issues are outlined which relate to the association's future role. (SA)

A modification of the Ames test for detecting carcinogens and mutagens using a strain of bacteria is described. A suggestion is given for checking the correctness of procedures by using particular hair dyes which have been shown to be mutogenic. (Author/SA)

The effects of human activity on stratospheric zone and several consequences to humans and their environment are discussed. (Author/SA)

The use of live animals in the secondary school laboratory is discussed along with suggestions for increasing the use of live animals and challenges to those teachers who restrict this use. (SA)

Suggestions are given for dealing with "senioritis" in high school students. These include offering college-level courses at a reduced cost. A description of introducing the college freshman biology course at Syracuse University into a high school program is given, with guidelines to promote success. (Author/SA)

Ideas related to including ethology in high school biology programs are given. The methods of ethology and tips on how to communicate observations are briefly explained. (SA)

Reported is a study of the influence of a biology course on the development of correlational reasoning in students. (SA)

Ideas intended for use in a high school biology laboratory are given. Swordtail fish are described as subjects for observation in animal behavior studies. (SA)

The interdisciplinary approach of cognitive neuroscience in studying mind-brain relations is discussed. (SA)