This book features a collection of 54 decimal number puzzles designed to provide experiences in problem solving and mathematical reasoning for middle and high school students. Each puzzle consists of a sequence of 10 clues about an unknown decimal number. The clues, when revealed one at a time, lead students through deductive reasoning to the…

This National Aeronautics and Space Administration (NASA) document presents activities on the properties of galaxies for additional curriculum support. The activities presented in this document include: (1) "How Big Is the Universe"; (2) "Identifying Galaxies"; (3) "Classifying Galaxies Using Hubble's Fork Diagram"; (4) "Identifying Unusual…

Math Mountain is a special section on the Comprehensive School Mathematics Program (CSMP) web site just for kids. It features challenging problems for primary and intermediate grade students. This booklet contains problems featured in Math Mountain over the past year and can be used as a source of additional problems to challenge students or to…

Presented are ten problems for the mathematics laboratory in the intermediate grades, the children's reactions to the laboratory, and the authors' evaluation of it. (RP)

Article is based on an evaluation report of a creativity workshop for disadvantaged children conducted in 1971. (Authors)

Article describes a math game for developing problem-solving skills and strategies in the classroom math lab. (Author/MM)

Some activities with geoboards done by pupils aged 10 and 11 are first reported, followed by an analysis and development of extended mathematical ideas. (MNS)

Using a man/habitat model, secondary teachers can help students view relationships between habitat problems and local government agencies whose decisions affect their habitat. The unit also involves students in learning about concepts germane to global education, like interdependence, conflict, and change. (RM)