This lesson is mainly based on the common toy "Tangram" in children's life to develop students' spatial concept and hands-on operation ability. Before class, Mr. Tang introduced the inventor, historical origin and use of Tangram, which was very interesting. All the children opened their eyes and listened very carefully. Some children can introduce the jigsaw puzzle from a "mathematical perspective". Finally, the hands-on operation came. After careful thinking, the children put two triangles and a square into a rectangle, a square, a trapezoid and a parallelogram by turning, rotating and moving. Then, Mr. Tang also brought creative works made by children with jigsaw puzzles last semester. The last link: "Please expand your imagination, design an excellent work and give it an interesting name." Hearing this request, the children were very happy and couldn't wait to take out their puzzles and put them into creation. Some children spell turtles, some spell birds, some spell fishermen to fish ... They enjoyed so many excellent works that the teachers attending the lecture were full of praise.
"Jingle bells ..." The bell rang, and the math class that Mr. Tang brought to the children not only made the children "have fun", but also inspired the students' interest in learning math in the process of hands-on operation. I believe that through this class, children are full of enthusiasm for mathematics learning.