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背景

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遊戲

數學概念12: 形狀-多邊形的邊、角、頂點

Mathematics_green_shape_box
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Mathematics_green_shape_bulletin board_finch_bird_painter
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Mathematics_green_shape_dice_game board
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Mathematics_green_shape_finch_bird_organizer
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Mathematics_green_shape_finch_bird_chalkboard
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