How to choose a graphing calculator

　　Graphing calculators are more expensive, so you should pay more attention when choosing a graphing calculator. There are several key points for purchasing a graphing calculator, including:

　　1. Is it portable

　　You should choose a graphing calculator that is small in size and easy to carry, so that you can carry out creative and personalized mathematics learning activities anytime, anywhere without geographical restrictions.

　　2. How expandable

　　A good graphing calculator should have good scalability. Two graphing calculators or the connection between graphing calculators and computers can be realized through data lines or wireless infrared ports.

　　3. Inconvenient to use

　　The ease of use of a graphing calculator is reflected in many aspects, including whether the screen display is clear, whether the operation is concise, whether it has a color display function, etc.

　　4. The choice of function

　　Graphing calculators have many functions. Generally, graphing calculators with more functions are more expensive. You can choose graphing calculators with appropriate functions according to your needs.