In earlier columns, the celestial coordinate system of hour circles of right ascension and degrees of declination was introduced along with the use of an equatorial star chart (see SFA Star Charts in Resources). This system shows the planets' motion relative to the ecliptic, the apparent path the Sun follows during the year. An alternate system,…

Discusses a weather prediction activity connecting local weather network by computer modem. Describes software for telecommunications, data gathering, preparation work, and instructional procedures. (YP)