A Split watermelon sits on a table in a Victorian library. Across the room a debonair fellow holds a deck of cards. With a flick of his wrist he sends a card whizzing across the room—a distance of 20 feet. The crowd gasps as it slices deep into the melon's red pulp.
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机译：识字和算术磁性图。白色磁性片，可轻松放置在白板上。各种类型的图表，包括大型写作图表，Andrewa的电磁数学表格和学生魔术写作图表。图表可以水平（600x900mm）或（250x200mm）或垂直（900mmx600mm）排列。写作图表用虚线表示。粗线为蓝色，虚线为红色。 Andrewa的Magnetic Math Grid由50x50mm的蓝色方块组成;网格为594x841mm，由十七行十一列组成。
