本书以童话、小故事、生活中的事件、新闻要点、热点问题、古诗文、《九章算术》、《几何原本》、科学幻想、科学现象等内容为主，并辅以阅读提示、阅读指导和解答问题。着重培养学生"发现问题、提出问题、分析问题和解决问题”能力的要求，以提高学生数学学科的素养。本书兼顾所含年级及相对应的知识，篇幅相对平均，服务于不同学生的思维水平。本书成为小学生课外阅读的小伙伴，在阅读每篇小短文的过程中享受学习和研究的兴趣，在解决问题的过程中获得知识和方法的积累。让不同认知的学生都有收获。家长对孩子进行课外辅导，往往凭借自己的学习经验，缺少专业性的指导。此书为家长提供指导学生阅读的资料及指导方法。让家长和孩子在阅读中共同体会学习的乐趣。现行教材分为数与代数、图形与几何、统计与概率和综合与实践四个领域，小学数学知识处于各个板块内，跨板块知识之间关联内容比较少，在教学中教师也需要具有综合性的素材。

李燕燕，著名小学数学教育专家，多年担任小学数学教研员，曾荣获国家级优秀教研员称号，现承担人教版小学数学教材培训工作，出版多本著作。受聘教育部承担线上教学的审查工作；人民教育出版社小学数学指导专家；北京师范大学小学数学国培指导专家；清华大学小学数学国培指导专家；参与人教版小学数学教材和教师用书的编写。

理财与消费 1
美丽的“陷阱”（一） ·····················2
美丽的“陷阱”（二） ·····················6
旅游中的学问——旅费 ···············.11
购卡享优惠 省钱坐地铁（一） ·····.16
购卡享优惠 省钱坐地铁（二） ·····.21
人生的第一次理财 ·····················.27
外卖中的数学问题 ·····················.31
“以旧换新”里的学问 ·················.36
旅游与文化40
天坛之旅（一） ··························.41
天坛之旅（二） ··························.46
青岛之行··································.·····················52
北京汽车博物馆之旅 ··················.58
旅游规划中的数学问题 ···············.63
亚洲象，你要去哪里？ ···············.67
圆柱容球的故事 ························.72
方圆中的秘密····························.·····················77
科技与健康83
便捷小能手——京承高铁 ············.84
海豚走世界·······························.·····················89
嫦娥五号“奔月”记 ··················.94
北京大兴国际机场有话说 ············.99
通往机场的轻轨 ························105
袁隆平和他的杂交水稻事业 ·········109
健康小达人修炼手册 ·················.115
怎样饮食更健康 ························122
为什么不能随意投喂小动物 ·········126
巧办游泳卡····················································130
处处有数学134
举重比赛中的数学 ·····················135
百米赛道，0 的突破 ···················139
神奇的跳眼法····························143
用数据宣告“抗美援朝”的伟大 ···147
“圆环”可以这样想 ····················152
章丘大葱甲天下 ························158
母亲节的礼物·················································163
生活中的快递问题 ·····················166
孝顺的子航····················································172
税收我知道····················································178
爷爷的养虾池·················································182
膨胀的瓶子····················································187