Printed 2 tasks to a sheet, each Create-a-Center includes 90 tasks, ready to cut out and make into a center. Also included with each is a crossword puzzle and another enrichment activity. The multi-disciplinary activities are keyed to Bloom's Taxonomy and include tasks from the 6 major classifications of the cognitive domain: knowledge, comprehension, application, analysis, synthesis, and evaluation. Instructions on using the cards to create a learning center are included. Themes include Earth's Structure, Earthquakes, Volcanoes, Specific Earthquakes and Volcanoes, and Related Phenomena.