多功能活动角教具Multi-functional Angle Teaching Tool

专为二年级学生设计 / Designed for Grade 2 Students 这款3D打印教具专为帮助二年级学生理解"活动角"的数学概念而制作。 This 3D-printed teaching tool is specially created for second graders to learn about movable angles in mathematics. 通过直观的可旋转指针和清晰标注的角度刻度，孩子们可以亲手操作，轻松掌握锐角、直角和钝角的区别。 Featuring a rotatable pointer and clearly marked angle measurements, it allows children to physically explore acute, right, and obtuse angles. 教具边缘还带有厘米刻度，兼具直尺功能，满足日常数学课测量需求。 The built-in centimeter ruler adds practical measuring functionality for math class activities.