Introduces a laboratory experiment that investigates the key factors in determining the depth or diameter of an impact crater. (YDS)

Describes a collaborative project between the Virtual School of Engineering at The University of Queensland and two junior and senior science classes at Townsville State High School. The project involved science students working with real world engineering problems using on-line resources. Problems were created by the senior science teacher and…

Described is an alternative method of term paper preparation which provides a step-by-step sequence of assignments and provides feedback to the students at all stages in the preparation of the report. An example of this model is provided including 13 sequential assignments. (CW)

Described is an activity in which groups of students investigate engineering principles by writing a feasibility study to raise the luxury liner, Titanic. The problem statement and directions, and suggestions for problem solutions are included. (CW)

Presented are two demonstrations; "Heat of Solution and Colligative Properties: An Illustration of Enthalpy and Entropy," and "A Vapor Pressure Demonstration." Included are lists of materials and experimental procedures. Apparatus needed are illustrated. (CW)

This paper suggests a nontraditional pedagogic approach to the subject of redox reactions and electrode potentials suitable for freshman chemistry. Presented is a method for the representation of galvanic cells without the introduction of the symbology and notation of conventional cell diagrams. (CW)

The principles and procedures for three enthalpimetric measurement experiments including a determination of the water equivalent mass of the calorimeter, the calibration of the instrument, and determination of the dissociation heat of boric acid performed with a teacher-made instrument are presented. Suggestions for further experiments are…

Background information, laboratory procedures, and a discussion of the results of an experiment designed to investigate the difference in energy gained from the aerobic and anaerobic oxidation of glucose are presented. Sample experimental and calculated data are included. (CW)

Discussed are the reasons for the changing of the seasons on earth. Included are 27 activities which can be used to teach geography and the seasons. Diagrams of planetary motion and climatographs are presented. (CW)

The solution to this problem is discussed using the same calculations as when calculating the temperature of a planet. The confirmation of these calculations by doing an experiment is described. (CW)

The experience of one high school in New York State offering physics to freshmen is described. Advantages and disadvantages of this approach are discussed. Curriculum alternatives within the New York State guidelines are presented. (CW)

An activity is described in which students learn modeling skills by creating concrete models with familiar objects. Teaching methods, materials, procedures, and outcomes are discussed. (CW)

Activity suggestions for the months of September and October are provided in a calendar format. In addition, two activity sheets, which provide detailed information for studying the moon and the alphabet including materials, and procedures are provided. (CW)

Presented is a science activity which explains the discrepancies found between summer and winter solstice sunrise and sunset times. Used is a mathematical equation which takes into account the earth's changing speed and the tilt of the earth. (KR)

Discussed are the uses of sea urchins in research and their usefulness and advantages in the classroom investigation of embryology. Ideas for classroom activities and student research are presented. Lists 25 references. (CW)