Learning tool for learning number composition and number decompositions and for presenting partial-whole relationships in initial arithmetic lessons

摘要

Learning means for arithmetic initial instruction arithmetic operations and for learning number composition and number decompositions and for representing the part-whole relations of natural numbers, characterized by: different length frame members (100, 102, 103, 107, 108), which represent the natural numbers of one to ten by their longitudinal extent, each having a recess (250) in which a frame-shaped support surface (200) is arranged, which are different long insertion slips (802, 805) and at least one hole (500, 550), wherein the differently long insertion plates (802, 805), which also represent the natural numbers of one to ten by their longitudinal extent, on the recesses of the frame elements are tuned and the insert plates and thus also the recesses of the frame members have a proportional relationship to the frame elements.