I have taken countless math classes and learned a lot of knowledge, but one class is still fresh in my memory and left a deep impression on me.

That was when I was in the fourth grade, and we were still learning how to calculate the areas of triangles and trapeziums. In class, the teacher asked us, "How can we calculate the area of a triangle?" Students in our class are racking their brains and using their brains. I also looked at the ceiling and thought hard with my chin in my hand. Suddenly I had a brainwave and thought that I could make a parallelogram with two identical triangles! (We already knew how to calculate the area of parallelogram at that time) First calculate the area of parallelogram, and then divide it by 2. Because this is a mosaic of two identical triangles, the base and height of the triangle are the same as those of the mosaic parallelogram, so the area of the triangle can be calculated by multiplying the base by the height and dividing it by 2. Thinking of this, I raised my hand to speak and said my thoughts. At this time, some students also spoke their own methods. We were all praised by our teachers, who called us "little mathematicians". After school, we "little mathematicians" got together and chatted happily about what happened in math class. Don't mention how happy we are!

Every time I think about it, I feel extremely proud, because active thinking in class can not only improve my math scores, but also get happiness from it. Students, let's use our brains and strive to be "little mathematicians".