Probability Resource Kit, includes: 4 different types of spinners, 4 different types of dices, two-sided probability discs, assorted discs, and sticks for many probability activities in mathematics
Vibration generator for exciting oscillating and waves mechanically, e.g. in coil springs, a rubber cord, a wire ring or a Chladni plate. In robust plastic housing including mounting pin with 4-mm socket for attaching accessories
Fraction Resouce Kit, Includes: fraction circle set, fraction square set, overhead fraction circle set, fraction bar set with work book and guide, fraction chart, a Focus on Fraction book and a Fraction Circles activity book
Digital Counter For event counting, a fixed counting period can be programmed in a range from 0.1 ms to 99999 s. Counter events (e.g. start or stop) can either be triggered by a signal to the input sockets or manually via switches. The unit includes a plug-in power supply.
Attribute Games and Problems, unit was developed as part of the ESS unit to apply certain classification concepts: observation, identification, combinations, ordering and analyzing
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