This DVD contains four 20 minute programs. Titles included are: "A Journey Through Geologic Time," "Earth's Changing Surface," "Fossils," and "Geology of North America." Each program is 20 minutes and has a 30-page teacher guide plus video indexes, labeled slides, glossary, English subtitles. The PDF guides for each program can be accessed by putting the DVD into your computer and opening them via Adobe Acrobat Reader on both Macs and PCs.