http://watt.enc.org/www/curric/records/full/013952.shtml This CD-ROM with teacher's guide, part of the ACTIVE MIND series, contains ten interactive learning activities designed to promote problem solving, reasoning, and creativity in very young children. Using animated activities and games activated by clicking on picture icons, children can explore such mathematical concepts as measurement, geometry, numeration, and computation with on-screen manipulatives. The teacher's guide contains 21 classroom activities to develop and extend the concepts presented on the CD-ROM.