Science laboratory is an indispensable special classroom in primary and secondary school teaching, and it is a teaching site that must be configured in all primary schools. In the past, there were many problems with the construction of elementary school science LABS, such as:

▪ Students need to spend a lot of time and energy preparing for experiments, which objectively reduces their enthusiasm for teaching. How to help teachers reduce the time and energy of experimental preparation to facilitate experimental teaching? In addition, due to the heavy workload of students, students' experimental time is severely compressed, which is also an important aspect of the implementation of practical teaching.

▪ A lack of awareness of primary science teaching in some schools has led to some problems in laboratory management. Such as laboratory instrument maintenance, induction and trim.

▪ Some elementary school science knowledge is abstract. It is difficult for students to grasp it quickly by teachers' oral explanation. Experiments are needed to help students understand. However, this part of knowledge has higher requirements for experimental equipment and practical ability, which is difficult for teachers and students to demonstrate and verify with experiments.

▪ The consistency of traditional scientific experimental instruments is poor, the operation is too cumbersome, the participation of students is low, not conducive to students to form knowledge modules, and even some experimental instruments can not achieve the expected effect.

To solve the problem as the orientation, Jiangsu Lebest invested heavily in the organization of related research. Based on the national revised primary school science curriculum as the standard, with 8 sets of primary school science textbooks in China, and with reference to the teaching concepts and teaching models of developed countries, a number of scientific inquiry experiment boxes were designed in accordance with the sequence of textbooks and knowledge modules. This set of science experiment kit contains material science, life science, the earth and the universe, design and technology and other four aspects of content.

The undergraduate science experiment box not only covers the content of the textbook comprehensively, but also penetrates into a lot of extended content, which greatly enriches the content of the scientific experiment. In addition, students can choose or build experimental instruments independently according to the experimental content, which greatly improves their autonomy and participation. Due to the high degree of students' participation, their interest in DIY also increases, which can effectively improve the experimental teaching effect.