Multifunctional ruler for mathematical teaching

Relating to the technical field of teaching articles, the utility model provides a multifunctional ruler for mathematical teaching. The multifunctional ruler comprises a baseplate with a rectangular structure. The inside of the baseplate is provided with an annular ruler with a hollow structure. An annular groove with a T-shaped section is disposed on the annular ruler along the circumferential direction, and a first slide ruler and a second slide ruler are hinged to the annular ruler. The first slide ruler is hinged to the annular ruler through two first hinges, and the second slide ruler is hinged to the annular ruler through two second hinges. Scales are disposed on the annular ruler along the circumferential direction, the first slide ruler and the second slide ruler, as well as four edges of the baseplate. The multifunctional ruler for mathematical teaching is suitable for education of mathematical knowledge for primary schools and middle schools. With the advantages of simple operation, easy carry and r