这两个维度分别是:(1)使用计算程序(computational procedures)解决算术问题的技能;(2)对算术事实(arithmetic facts)的表征以及提取这些 事实的能力。
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And even six-month-olds are sensitive to these rudimentary facts of arithmetic, telling us something about their mathematical knowledge, but also telling us something about that they expect things to remain when they're out of sight.
即便六个月大的婴儿,对算术的基础知识已经相当敏感,向我们展示了婴儿所具有的数学知识,但也同时告诉了我们,婴儿在看不到物体时,仍然会认为物体依然存在
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