The basics of the metric system are explained, and the materials a teacher will need to instruct students in metrics are described. (JD)

Describes the work in one area (functions) of an experimental project in mathematics involving the same group of children from kindergarten through second grade. The project was undertaken chiefly to give mathematical continuity to activities that made use of manipulative aids. (BR)

Describes a series of action books containing cardboard cut-outs for children to use in enacting the story as it is read to them. Discusses the educational value of various features of these books. (JMB)

Simple, classroom-tested probability activities that capture students' interest, develop critical thinking skills, and reinforce addition facts are suggested. All activities involve investigating the probabilities of the sums that come up when two dice are tossed. (MT)

Investigates age differences in the impact of play on subsequent tool-use, the influences of task characteristics on the impact of play on tool-use, the ways play aids tool-use, and the effect of play richness on tool-use among 30 children in each of three age groups (from four to five, six to seven, and eight to ten years of age). (RH)

Examined whether the density of play continues to increase as children grow older. Four- and five-year-olds made simple constructions using few materials, six- and seven-year-olds made more constructions with more materials, and eight-to ten-year-olds made fewer but much more extensive and integrated constructions. (Author/DB)

This activity explores two types of plastic molding and allows students to make their own plastic bottles. (MKR)