[KongchangAI]
Unverified80% confidenceDecision RuleTime unknown

选课时长要求单节太长会导致后半段效率骤降:一般6-8岁最佳专注单元约25-35分钟,超过45分钟的课需有中场休息或活动切换设计,避免疲劳性损伤和厌学

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