ERIC Number: ED401148
Record Type: RIE
Publication Date: 1994
EQUALS Investigations: Remote Rulers.
Mayfield, Karen; Whitlow, Robert
EQUALS is a teacher education program that helps elementary and secondary educators acquire methods and materials to attract minority and female students to mathematics. It supports a problem-solving approach to mathematics which has students working in groups, uses active assessment methods, and incorporates a broad mathematics curriculum presented in a variety of contexts. This document is one of a set of five Investigations Units and provides 7-8 graders with their first experiences with the links between algebraic formulas, geometric patterns, and data from measurements. In Remote Rulers students measure the apparent size and the actual sizes of an object as the distance from the object is varied. They plot these measurements on scatter diagrams, noting the resulting patterns of lines or curves, and explore graphs that represent algebraic relationships among coordinates, constant product, and constant ratio. Investigations sessions include: (1) Making Real People Smaller Than Your Thumb; (2) Measuring with Rulers at Arm's Length; (3) Group Investigation: Scatter Diagrams for the Algebraic Family XY=K; (4) Perspective Drawing Scatter Diagrams; (5) Group Investigation: Scatter Diagrams for the Algebraic Family Y/X=K; (6) Converting Pace and Stride Into Meters; (7) "How Far Is That Meter Stock?" Team Field Trials; (8) Motion and Perspectives; and (9) Sharing the Individual Projects. Also included are Spanish translations of selected student worksheets and a list of resources. (JRH)
Descriptors: Algebra, Data Processing, Females, Gender Issues, Geometry, Investigations, Junior High Schools, Mathematical Concepts, Measurement, Middle Schools, Minority Groups, Problem Solving, Sex Differences, Teacher Education
EQUALS, University of California, Lawrence Hall of Science, Berkeley, CA 94720.
Publication Type: Guides - Classroom - Teacher
Education Level: N/A
Audience: Teachers; Practitioners
Sponsor: National Science Foundation, Arlington, VA.
Authoring Institution: California Univ., Berkeley. Lawrence Hall of Science.