Presents a sequence of hands-on activities to help students understand the concept of arithmetic mean and gain experience in using mathematical models. Students create models in the process of solving problems and communicate to the class the meaning attached to the models. (MDH)

Presents activities for the K-2, 2-5, 5-6, and 5-8 levels that require students to analyze information graphically. Asks the students to discuss, describe, read, and write about the graphs and the information they contain. Supplies accompanying worksheets. (MDH)

Presents three teaching ideas: (1) a scoring rubric to assess students' ability to communicate attempts at solving homework problems; (2) a three-part measurement activity using trigonometry, maps, and compasses to locate hidden treasure; and (3) a demonstration of the effects of numerical coefficients on graphs of quadratic functions. (MDH)