准确地掌握概念,是提高数学教学质量的关健。真实、具体、有趣的情境可以激发学生的求知欲,加深对概念的理解。例如,教师把石块投入盛满水的杯子后,水会溢出,学生可以领悟“物体占据空间”的道理,初步认识“体积”的意义。 Accurately grasp the concept is to improve the quality of mathematics teaching key. Real, concrete and interesting situations can stimulate students' curiosity and deepen their understanding of concepts. For example, when teachers put stones into cups filled with water, the water overflows. Students can understand the truth that “objects occupy space” and initially understand the meaning of “volume.”