Landforms, natural hazards, and the change in the Earth over time are common material in state and national standards. Volcanoes exemplify these standards and readily capture the interest and imagination of students. With a minimum of training, students can recognize erupted materials and types of volcanoes; in turn, students can relate these…

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,…

When the topic of cell division is introduced in the classroom, students can showcase their interpretations of the stages of mitosis by creating a slide show illustrating prophase, metaphase, anaphase, and telophase (see samples in Figure 1). With the help of a computer, they can create a model of mitosis that will help them distinguish the…