Now，teachers have all sorts of choices when it comes to how they can teach their students and it could not have come any sooner. One is actually a whiteboard that is interactive. So not only can teachers display things for their students to see in colour，but teachers can also change up what is being displayed on the screen through the use of a wireless device that is typically in the shape of a pen or laser pointer. To change what is being displayed on the screen, all the teacher has to do is point at the screen using the device and just like that, things are moving. No longer are lesson plans stagnant,_but they come to life right before the students' eyes.

　　Another is a touch pad screens where teachers can actually walk around the room to teach their students. The screens themselves are similar to other name brand touch screens that are almost like small computers. They are extremely handy and perfect for situations where the teacher likes to get up and get going. Along with that, SmartEd Services is a portable audio device that allows teachers to amplify(扩大) what is being said to students. If you want to know more an easy way to check into all the options that are out there is to simply do some searching online.

　　语篇解读：在过去，课堂教学活动受到很大的限制，因此师生之间不可能做到有效和充分的交流。电子白板、触摸板屏幕等现代教学技术不仅仅使得教学活动丰富多彩，也在很大程度上提高了教学效率。

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