Describes the construction of durable, inexpensive and large sand-hourglasses for use in controlled experiments that allow students to observe, infer, measure, record data, and predict. This hands-on activity is designed to take place over a three-day interval. Includes materials needed, techniques, procedures, follow-up activities, and resource…

Presents four sets of activities to develop the concepts of data analysis and graphing. Students estimate sample populations using beans, examine graphs from newspapers and magazines, predict the most popular color of cars, and simulate quality control in a manufacturing process. (MDH)

Exposes erroneous ideas related to the use of databases for teaching thinking skills. Reviews the importance of databases for teaching social studies; describes the teacher's role in helping students use databases; discusses effective teaching strategies; and outlines what is needed to teach thinking skills. (Author/LS)