| Education informatization is an inevitable choice to adapt to the development of the times,and the large-scale online teaching during the COVID-19 pandemic has accelerated the process of education informatization.To carry out online dance sports education is not only a temporary countermeasure under the special situation of the epidemic,but also the general trend of education informatization.It is imperative to construct and share dance sports teaching resources.Based on this,starting from the analysis of the problems existing in the current dance sports teaching and combining the learning needs of students and the characteristics of dance sports teaching,this research developed a 3D demonstration system of cha-cha basic steps with 3D animation and Unity3 D as the core technology to assist beginners in learning knowledge and skills,in order to provide a certain reference for dance sports informatization innovation teaching.This study takes the design and application of the three-dimensional demonstration system of the basic steps of the cha-cha as the research object.Based on the research methods of literature,questionnaire,teaching experiment and software development,it firstly discusses the design and development process of the three-dimensional demonstration system of the basic steps of the cha-cha,and then demonstrates the effect difference between the system and traditional teaching through teaching experiments.Finally,the advantages and suggestions of the system in teaching application are put forward.The study reached the following conclusions:1.The cha-cha basic step 3D demonstration system is produced through the steps of cha-cha basic steps screening,model design and binding,3D animation production,system interface and function design,including three modules of dance sport theory knowledge,3D animation of basic steps and video appreciation and analysis,with functions of scene jump and camera free rotation.It can be used to assist cha-cha beginners to learn motor skills and theoretical knowledge.2.Both the teaching model of the three-dimensional demonstration system of the basic steps of the cha-cha and the traditional teaching model can significantly improve the physical level of students,and there is no significant difference in the improvement effect between the two.3.The teaching mode of three-dimensional demonstration system of basic steps of cha-cha has a significant effect on improving students’ technical quality,music application,routine and performance display,and its teaching effect is significantly superior to the traditional teaching mode.4.The application of the three-dimensional demonstration system of the basic steps of the cha-cha in teaching can significantly improve students’ independent learning ability in sports,while there is no significant difference in students’ independent learning ability in traditional teaching mode.5.The usability score of the three-dimensional demonstration system of the basic steps of the cha-cha was 80.67 points,and the rating was A-.The students had a high evaluation on the usability of the system. |