Learning system of polygon stick for cognitive development

According to the present invention, disclosed is a technical idea including: a body unit which has a polygonal cross-section, and in which a body is formed in the longitudinal direction and the other surface is parallel with the ground in a different direction when one surface comes in contact with...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	LEE, SUK JU, KIM, JIN
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	ADVERTISING APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND,DEAF OR MUTE CRYPTOGRAPHY DIAGRAMS DISPLAY EDUCATION EDUCATIONAL OR DEMONSTRATION APPLIANCES GLOBES PHYSICS PLANETARIA SEALS
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