Mathematics teaching board
The utility model relates to a technical field of teaching assistance device especially relates to a mathematics teaching board, and height and angle modulation can be carried out to it, reduces and uses the limitation, and can carry out video teaching through the display screen simultaneously, impr...
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Hauptverfasser: | , |
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Format: | Patent |
Sprache: | chi ; eng |
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Online-Zugang: | Volltext bestellen |
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