Device for teaching counting

Device for teaching decimal math

Devices for transforming pictorial images in orthogonal dimensio

Didactic aid for the teaching of any number system

Didactic game based on selection of the trajectories followed by

Didactic-educational toy for elementary arithmetic operations, r

Die having magic squares

Display polyhedra having marked and unmarked paired opposing fac

Double-beam math balance

Education device

Education system kit

Educational aid for mathematics

Educational aid for word and numeral recognition

Educational aides and methods

Educational amusement device for matching words with non-verbal

Educational and entertainment device

Educational and recreational mathematical device in the form of

Educational and recreational mathematical kit in the form of a s

Educational bank

Educational blocks