Discusses how a science teacher can explain to his youngsters what happens when an ice cube is added to tap water or other liquids. How long melting a standard ice cube takes is also discussed. (HM)

Activities in which students build their own simulations of fossils, using seashells, chicken bones, toy dinosaurs, or leaves as models and plaster of paris, sand, mud, clay, or a mixture of gravel and clay as a matrix are presented. Curriculum extensions are included. (KR)

A game used for test review based on the television game show "Jeopardy" is described. Sample categories, rules, models for category cards, answer pockets, and answer cards are included. (KR)

Two easy student activities that demonstrate physical weathering by expansion are described. The first demonstrates ice wedging and the second root wedging. A list of the needed materials, procedure, and observations are included. (KR)

Discussed are ways in which the slide rule can illustrate a number of mathematical functions and concepts. Fundamental operations and visual advantages are reviewed. (CS)

Describes geography activities for elementary students. In the first activity, students learn how to understand coordinates and use them to read maps. In the second activity, students learn the concepts of the legend as well as how to use it to find their way around on a map. (PR)

Presents a series of investigations focusing on the biodegradable packing materials ("peanuts"), which provide a method for exploring science through experimentation. These activities can help fourth through sixth graders sharpen their critical thinking and science process skills. (PR)

Thirteen suggestions for student research projects are presented. Project topics include birds, fish, frogs or toads, insects, spiders, crustaceans, mammals, predators, and ecology. The teacher's role in managing student projects is discussed. A list of middle school textbook resources is provided. (KR)

Presented is a lesson in which students learn about characteristic traits of a species and variations within a species. Background information for teaching and assessing the lesson and topics for possible class discussions are provided. An activity in which students learn about traits and variations of themselves is included. (KR)

Offers useful tips for teachers engaging students in classroom science activities. Emphasis is placed on creating and maintaining a learning environment that is conducive to all students learning. (ZWH)

Describes an open-ended interdisciplinary activity in which students construct a model of an island and then investigate real-life problems and other student selected island projects. Emphasis placed on problem solving. (BR)

Presents two exercises in astronomy: (1) the production of star trails and (2) the measurement of the distance between stars and their apparent movement in the sky. Includes directions, illustrations, and activity questions. (MA)

Presents activities designed to allow students with backgrounds in states of matter and measurement to have a very concrete hands-on, minds-on experience with both physical and chemical changes and to compare and contrast the end products of each type of change in a concrete way. (PR)

Explains the arrangement of materials in a classroom to simulate land or weather conditions. On each desk in the room pertinent bits of information are placed. Students gather bits of information and synthesize material into an overall map of the area. (CP)

Describes activities for the elementary school classroom to increase observational accuracy of children. (CP)