大山和可乐两个孩子有心参与社会公益，节省自己饭钱来帮助其他弱势孩子。虽然孩子们一开始用错方法，没有量力而为，但成长就是个需要父母和师长引导的过程。为了达成目标，故事中的大山和可乐说了个善意的谎言，父母也可以借着这个故事和孩子分享"诚实"的价值观，并且将它和"金钱"价值观连接，替孩子未来的金钱人生健康打下基础。
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