猜想,是发现的起点,是探索的动力;猜想,是一种思维方式,是一种体验过程,是一种学习方法。然而,在教学过程中,教师往往过分地强调数学的严谨性和科学性,而忽略了对学生猜想能力的培养。数学课堂应该让学生敢于猜想,善于猜想,学会数学猜想的方法。以《长方形的周长》教学为例,谈了在小学数学教学中如何培养学生猜想的能力。 Conjecture, the starting point of discovery, is the driving force of exploration; conjecture, is a way of thinking, is a process of experience, is a learning method. However, in the process of teaching, teachers tend to place undue emphasis on the rigor and science of mathematics while ignoring the cultivation of students’ ability to guess. Math class should allow students to dare to guess, good guess, learn mathematical guess method. Taking the teaching of “the perimeter of the rectangle” as an example, it talks about how to cultivate the students’ conjecture in the mathematics teaching of primary school.