本套教学设计依据《义务教育信息科技课程标准（2022 年版）》（后文简称《课程标准》）编写，与《安徽省义务教育信息科技教学指南》完全配套，旨在帮助一线教师有效组织和实施教学，更好地培养学生的信息素养、创新思维和实践能力。五年级下册有4 个单元，共14 个项目，围绕这14 个项目，设计并编写了28 个教学设计。每个单元先对单元结构进行分析，包括单元核心素养、单元内容分析、单元学习目标、单元内容结构，然后进行课时学习设计，每个项目占1 课时，每个课时配备两种教学设计，分别为教师的教和学生的学提供方案。本套教学设计案例不仅提供了全面的指导方案，还通过一系列特色设计，增强教学的互动性和有效性，致力于成为信息科技教师的得力助手，帮助教师深入理解《课程标准》，高效地设计学习活动，提升信息科技教学质量。

《信息科技教学设计》 编写组由信息科技教研员和优秀的中小学教师组成。具有丰富的理论知识、扎实的教学研究和教学实践经验，紧银科技的发展，对新科技应用掌握熟练，并深谙学生的发展规律。

第1 单元 美丽花园巧绘制——算法设计······························································1
第1 课 分析花朵找花瓣——问题分解···························································2
教学设计1·························································································2
教学设计2·························································································9
第2 课 画正多边形花瓣——问题抽象························································.14
教学设计1······················································································.14
教学设计2······················································································.22
第3 课 旋转花瓣成花朵——模型构建························································.30
教学设计1······················································································.30
教学设计2······················································································.36
第4 课 千变万化绘花园——算法实现························································.41
教学设计1······················································································.41
教学设计2······················································································.46
第2 单元 社团活动解趣题——算法应用···························································.52
第5 课 折出最大的纸盒——解决计算类问题···············································.53
教学设计1······················································································.53
教学设计2······················································································.57
第6 课 巧猜老师的年龄——解决查找类问题···············································.63
教学设计1······················································································.63
教学设计2······················································································.67
第7 课 估算树叶的面积——解决估算类问题···············································.73
教学设计1······················································································.73
教学设计2······················································································.77
第3 单元 志愿服务提效率——算法效率···························································.84
第8 课 垃圾投放算积分——认识算法效率··················································.85
教学设计1······················································································.85
教学设计2······················································································.91
第9 课 准备礼品送温暖——缩小范围提效率···············································.97
教学设计1······················································································.97
教学设计2······················································································103
第10 课 挑选鲜花敬老人——减少算次提效率··············································109
教学设计1······················································································109
教学设计2·····················································································.115
第4 单元 数字生活话安全——算法与数字社会··················································124
第11 课 保障我的密码安全——算法与个人隐私···········································125
教学设计1······················································································125
教学设计2······················································································131
第12 课 探寻刷脸开门奥秘——算法与数字生活···········································135
教学设计1······················································································135
教学设计2······················································································142
第13 课 设计图书防伪编码——算法与知识产权···········································146
教学设计1······················································································146
教学设计2······················································································151
第14 课 规划路线高效出行——算法与交通出行···········································156
教学设计1······················································································156
教学设计2······················································································163