《小数的加法》是《小数的认识》和《小数的意义》之后的一堂计算课,在计算课上提高学习兴趣,在“聚餐”中培养运算能力,在合作互助下学习,并在层层递进的练习中掌握小数的加法运算,效果明显。通过教材研究,我发现课本上掷实心球的情景不能完全激发学生的学习兴趣,生活中的热点话题更能吸引学生。于是,我设计了当下最为敏感的情景——抢红包。拿出其中抢到的两个红包,让情绪高涨的学生帮我算算一共抢了多少钱。抢红包的情景设计不仅 “Addition to Decimals” is a computational lesson after “knowledge of decimals” and “the meaning of decimals”. This course will improve students’ interest in computation, cultivate computing power in “dinner ”, learn from cooperation and mutual aid, Grasp the incremental practice of decimal addition, the effect is obvious. Through the textbook research, I found that the scene of throwing a solid ball on a textbook can not completely stimulate students’ interest in learning. The hot topics in life are more attractive to students. So, I designed the moment the most sensitive scenario - grab a red envelope. Took out two of the red envelopes grabbed, so that students in high spirits helped me count how much a total robbed. Scenarios to grab red envelopes not only