A parallelogram teaching demonstration device

Provided is a parallelogram teaching demonstration device which is a dedicated teaching aid. The dedicated teaching aid with a simple structure has a vivid visual effect when manipulated and is used for teaching the properties of a parallelogram. The parallelogram teaching demonstration device compr...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	WANG XIAOTAN
Format:	Patent
Sprache:	chi ; eng
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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