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Choosing a suitable student ruler is also very important. Students can choose different types and functions of rulers based on their subject needs and usage habits. For example, for students who need to draw frequently, a triangular ruler with a special angle scale would be a good choice; For students who need to measure curves, a curve ruler is more practical.

When using a student ruler, students need to pay attention to the following points. Firstly, it is important to keep the ruler clean and intact to avoid blurry or damaged markings that may affect its effectiveness. Secondly, when using a ruler for measurement, it is important to maintain its stability and avoid measurement errors caused by shaking or movement. Finally, pay attention to the correct reading to ensure the accuracy of the measurement results.

The functions of student rulers are diverse and diverse. In addition to basic measurement functions, some high-end student rulers are also equipped with special functions such as scale amplification and fluorescent display. The scale amplification function enables students to see the scale more clearly during measurement, improving the accuracy of the measurement. The fluorescent display function facilitates students to use the ruler in dimly lit environments, improving the convenience of use.

The use of teaching scale sets also requires attention to some issues. Firstly, the design of the measuring scale should be scientific and reasonable, with clear and specific indicators and appropriate scales to ensure the accuracy and effectiveness of the evaluation results. Secondly, when using a teaching scale set, teachers should follow the principle of objectivity and impartiality to avoid the influence of subjective assumptions and biases. Finally, the teaching scale set is just one of the evaluation tools and needs to be combined with other evaluation methods and techniques, such as observation, interviews, and work presentation, to obtain more comprehensive and accurate evaluation results.

The teaching scale set also has ease of use and flexibility. Teachers can choose or design a teaching scale set that suits their actual needs. In the evaluation process, teachers only need to score or rate students' performance based on the indicators and scales on the scale, which is simple and convenient to operate. At the same time, the teaching scale set can also be adjusted and modified as needed to meet the teaching needs of different subjects and grades.