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Abstract In traditional teaching, due to differences in teachers, the knowledge connections between different courses are often over‐
looked, resulting in excessive repetition or failure to integrate new and old knowledge points. To make the knowledge points more
smoothly connected in teaching, we help students to establish a knowledge connection system. Firstly, we organize a teaching salon
where teachers fill out a teaching knowledge connection table to find fusion points between courses. Secondly, we use holographic
projection technology to build a holographic projection pyramid. Finally, we use holographic projection during the teaching to help
students recall previously learned knowledge and better integrate it with new knowledge, and understand new information. To sum
up, holographic projection technology visualizes models in courses, deepens students' impressions, increases visual stimulation dur‐
ing learning, and enhances students' interest in learning. This innovative form of teaching tool and teaching method helps to deepen
students' understanding and absorption of knowledge.
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