Unverified80% confidenceTradeoffTime unknown
夹具张力越大夹取越省力越有成就感，但对幼儿手部力量要求越高易受挫；张力小则更易操作但训练精细动作效果弱，2-3岁选低张力优先保证信心
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80%
Confidence
Long-term
Relevance
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