Modeling of an instructional design process based on the problem-based learning approach in three-dimensional multi-user virtual environments

Instructional Design of Students' Cognitive Development Based on Driving Problem Chain —— Taking “Hydrolysis of Salts” as an Example

“…In 2017, the Ministry of Education promulgated the Chemistry Curriculum Standard for Ordinary Senior High Schools (hereinafter referred to as the "New Curriculum Standard"), which clearly put forward the literacy requirements of chemistry education, and identified "evidence reasoning and model cognition" as one of the five core literacy of chemistry, and most scholars believe that this literacy is the thinking core of chemistry core literacy, focusing on cultivating students' chemistry thinking, that is, "being able to understand the relationship between chemical phenomena and models, Can use a variety of cognitive models to describe and explain the structure, nature and changes of matter, predict the possible results of matter and its changes, and construct models based on the information of matter and its changes." However, the teaching of chemical modeling requires us to dig deep into the value behind the literacy-based teaching, stop at the surface of knowledge, cultivate students' cognitive perspective and thinking model from the perspective of chemistry, and improve students' model cognitive ability [1][2]. In the process of constructing model, students' interest in learning chemistry is improved, and in the process of constructing model and modifying model, students' old and new thinking collides in communication and interaction, and finally a general idea to solve problems is formed [3][4].…”