[KongchangAI]
Unverified85% confidenceDecision RuleTime unknown

数字认知玩具的数字范围应匹配年龄:2-3岁选1-10,3-4岁选1-20,4-5岁再引入1-100及简单加减,超前购买大数范围玩具会因抽象度过高被闲置

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