This study investigated the ways in which four middle grades teachers developed mathematical knowledge for teaching (MKT) geometry as they implemented dynamic geometry software in their classrooms with the assistance of a coach. Teachers developed various components of MKT by observing coaches teach, by dynamic discourse with students, which is…

Provides reviews of courseware entitled: "Mystery Matter," which is a series that supplements the basic inquiry process; "Jumping Math Flash," which is an arcade-game program with arithmetic problems; and "Quest for Files: Science Rocks and Minerals The Upper Crust," which is a database program for earth science.…

Reviews two software packages for the Macintosh series. "Course Builder 2.0," a courseware authoring system, allows the user to create programs which stand alone and may be used independently in the classroom. "World Builder," an artificial intelligence software package, allows creative thinking, problem-solving, and…

Presents a method for using matrix algebra and computers to encode and decode secret messages. Provides examples of coding procedures, a short review of matrix multiplication, and a BASIC program for use with secret messages containing up to 1000 numbers. (RT)

Explores abundant numbers and presents a proof that abundant numbers of every order exist. Readers are encouraged to use the included computer program to explore abundant numbers for themselves, look for patterns in the output, and consider further questions. (Author/MKR)

Describes several phenomena in which interesting properties of numbers are demonstrated. Includes discussions of amicable, perfect, and sociable numbers. Presents computer programs for conducting a number chain search. (RT)

Reports on a study designed to analyze six primary science education journals published in 1985 and compares the results with some baseline data collected in 1970. Results indicated that the amount of material being published per year during that period increased, with additional emphasis on methods of teaching. (TW)

Three computer programs for the Apple II family are reviewed: (1) "Super Vocab Machine"--vocabulary self-tutorial; (2) "Elements, Compounds, and Mixtures: A Matter of Mystery"--database for the elements; and (3) "That's Life: Human Body Exploration"--information about the human body. (MVL)

Includes a list of favorably reviewed microcomputer software designed to be used in instructing students in kindergarten through grade 12. Developed as an aid to educators in previewing software, the list provides the name, type, cost, publisher, and grade level for instructional software in science and mathematics. (TW)