Described is a third-grade science unit using feathers. Children use the feathers to learn about measurement, observation, and inference. Procedures and results are discussed. (CW)

A hands-on science lesson which allows young students to apply stains in the classroom and then try to remove them is presented. Included are a list of materials, procedures, and a discussion of probable results. (CW)

Provides a calendar for the month of November on which are placed directions and pictures for different activities that can be performed each day. Outlines materials and procedures for an experiment. Includes information on an acid rain teachers kit, availability, and price. (RT)

Discusses a research project of testing detergents that resulted from students' classroom observations of and questions about water pollution and suds. Outlines procedures and responsibilities necessary for conducting the experiment. A sample student data sheet is included. (RT)

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)

Described is a science activity for intermediate grades which uses science skills to solve a mystery. Fingerprints, footprints, chromatography, invisible ink, and microscopic analysis are used in the activity. Observation, data analysis, and deductive reasoning are stressed. (CW)

Described is an activity where students determine the effect of different toothpastes on teeth. Students used observational data and pH changes to determine any changes in the teeth. Included are a list of materials, procedures, and results. (KR)

Presented is an activity that investigates the effect of sugar on teeth using cola, sugar solution, and water. Included are the materials, procedures, resources, and alternative lessons. (KR)

Describes science activities which use simple chemical tests to distinguish between materials and to determine some of their properties. Explains the water, iodine, heat, acid, baking soda, acid/base indicator, glucose, and sugar tests. Includes activities to enhance chemical testing and a list of suggested powders for use. (RT)

Described is an color-making activity where students use food coloring, eyedroppers, and water to make various colored solutions. Included are the needed materials and procedures. Students are asked to write up the formulas for making their favorite color. (KR)

Outlines steps for involving problem students in discovery-oriented science activities. States that planning is the basis for an effective lesson. (RT)

Describes a multidisciplinary unit which uses 12 varieties of apples. Explains activities for observing, predicting decay, art and science, the process of fermentation, and group and individual projects. Information on description of apples and labeled diagrams are included. (RT)

Discusses some of the ways that a cabbage can be used to produce a universal indicator of pH. Describes the methods for producing the indicator, experiments students can do on ordinary household chemicals, and a student take-home assignment for producing pH indicators. (TW)

Explains a science project conducted by the Boston Museum of Science to provide enrichment activities through an interaction between children and scientists. Provides information on the packets of creative problem-solving experiences, a description of the program, the culminating event, and joining procedures. (RT)