Displaying 1 of 1 标题： Subtraction machine. 格式: Three Dimensional Object (Artifact), Visual Materials 出版商，日期： Carson, CA : Lakeshore, [date of publication not identified] 描述： 1 toy : plastic ; 24 x 22 x 3 cm. plastic 摘要： Portable learning device to teach subtraction. Students press equation buttons to get correct answers. 目标读者注释： Ages 4 years and up. 序列号： Math machines Math machines. 主题： Subtraction. Mathematics -- Study and teaching (Elementary) -- Activity programs. Educational toys. Toys. Mount Prospect (Ill.) -- Library of things. Mount Prospect (Ill.) -- Library of things. 其他作者： Lakeshore Learning Materials (Firm) 发出请求 添加到我的列表 Expand All | Collapse All 可借出数量 地图标示 大封面图片 图书管理员视图 Displaying 1 of 1
