Abstract: In the era of quality education, teaching tools play a very important role in how to fully increase students' participation in the teaching process. The emergence of the electronic whiteboard is a revolutionary breakthrough in the old teaching model of the "trinity" of blackboard, chalk, and eraser that has been followed for hundreds of years. The so-called electronic whiteboard is a projector placed behind the electronic whiteboard to project only the computer image from behind the whiteboard, so that the user can operate it very naturally without blocking the projection light and causing any shadows. The editor below will introduce you to the tutorial on how to use the electronic whiteboard. How to use the electronic whiteboard for teaching
1. The electronic whiteboard needs to be used together with the projector and computer;
2. After the physical connection between the devices is completed, it needs to be installed on the computer The electronic whiteboard program performs positioning and calibration operations. The electronic whiteboard is equivalent to a large touch screen;
3. The electronic whiteboard has dedicated operating software that can import, annotate, edit, save, etc. PPT For operation, please refer to the software description for details;
4. Electronic whiteboards have different methods of touch screen operation based on different sensing technologies. Electromagnetism requires a special electromagnetic pen for pressing operations, while pressure sensitivity does not require direct pressing with a special pen. For infrared operation, you can use your fingers or other opaque objects to realize the touch screen function without touching the board surface for pressure sensing operation.
Tips for using electronic whiteboards
1. Make full use of the whiteboard mode to achieve proficient operation
The application of interactive electronic whiteboards should be in three categories: control, window and annotation. The basis for using the electronic whiteboard is to flexibly proceed under the three modes and master the characteristics and switching methods of these three modes. After the electronic whiteboard program is started, the default is the control mode. In the control mode, the electronic pen is equivalent to a mouse and can operate the computer from a distance on the whiteboard. You can directly enter the annotation mode through the mode switching tool in the control mode. At this time, the background image of the annotation mode is the screen displayed in the control mode. Now you can realize the powerful functions of writing, drawing, editing and other functions of the electronic whiteboard. If you enter window mode again at this time, you will find that there is no new page in window mode, but the background image in annotation mode is used as the page background. If you enter window mode for the first time from control mode, a new blank page will be created automatically. In fact, annotation mode can be understood as full-screen display in window mode. Operations that can be completed in window mode can also be completed in annotation mode.
2. Apply on-screen annotations to enhance classroom interaction
Use courseware such as PPt or Flash for teaching. The answers to fill-in-the-blanks, true-and-false questions and the problem-solving process are all set by the teacher before class. , is not caused by the interaction between teachers and students, it is a superstition of students' thinking. The interactive electronic whiteboard can write and draw without trace on various courseware, texts, and pictures. This function can be used to annotate the key content presented on the whiteboard, to display the process of building knowledge in real time, and to present the results of teacher-student interaction. In this environment, knowledge is generated through interaction, methods are mastered through interaction, and students' subject awareness is constantly enhanced. When I usually use an electronic whiteboard, I mostly write and draw on the PPt screen. This requires that answers cannot be set when making PPt, and sufficient space for comments must be left. The application method is: open a certain slide of the PPt courseware in the control mode, and then enter the annotation mode to complete writing, drawing and other operations. To annotate on the next slide, you must return to control mode and play the slide again.
3. Use the new page to flexibly display blackboard writing
In annotation or window mode, the newly created blank page is equivalent to a blackboard. You can write freely with an electronic pen, and you can insert and edit. Multimedia elements can also link original pictures, audio and video files. If you need to change the background color, select the desired page color from "Background Color" in the Format menu. If the default page is not enough, you can click "Extend Page" at the bottom of the current page. When the "Extend Page" font turns gray, the page will no longer expand downwards. If you still need to add writing on the blackboard, click "Insert Page" on the menu and create a new blank page. The electronic whiteboard will automatically record the content of the used pages. If you open the page preview, you can see all the used pages. In the page preview, you can drag to adjust the page order, change the page identifier, clone and delete pages, and easily call a certain page during teaching. Pages can also be exported as images, web pages or resources as needed.
4. Use the drawing function skillfully to strengthen graphics teaching
The geometric figures, straight lines, smart brushes, triangle rulers, grids and other tools provided by the electronic whiteboard can be widely used in space and In teaching in the field of graphics, it not only reduces the time-consuming and labor-intensive pre-class preparation in the past, but also makes teaching more visual and intuitive. For example: teaching "Symmetry and Translation", first create a new blank page in annotation or full-screen mode, set and open the page grid, then use the straight line tool to draw a shape, and then combine the lines. Of course, you can also select a shape from geometric figures. Change its shape and size. Then clone an identical figure, and then drag the cloned figure one square at a time, so that students can clearly observe the direction in which the figure has been translated and how many squares it has moved. If you need to display axisymmetric graphics, you can flip one of the graphics horizontally. If you want to delete a graphic, the eraser cannot be used, and you need to use the object selection tool to select the graphic and then delete it.
If the various functions of the electronic whiteboard can be flexibly used in teaching, the teaching of space and graphics can be more visual and clear.
5. Use tools for drawing to improve classroom efficiency
In daily teaching, if you use a triangle ruler or protractor to draw on the blackboard, your body often blocks the students' sight. Students cannot observe the entire drawing process. The electronic whiteboard provides a variety of tools such as compasses, set squares, protractors, rulers, and smart brushes. Using these tools, teachers can easily and accurately draw various graphics on the whiteboard. Such realistic operation enhances intuitive perception and improves classroom efficiency. For example: when teaching "Drawing Angle", you can use the protractor and brush tools to draw angles of any degree, and students can understand the drawing process at a glance. If you want to deepen your understanding, you can use the page playback function to play the process of drawing the corner just now. Using two triangles to draw a corner is difficult to demonstrate on a blackboard, but it is easy to complete on a whiteboard. For example: to draw an angle of 75°, first select the 45° triangle from the function menu of the triangle tool, and then select the 30° triangle from the function menu. At this time, two triangles of different shapes appear on the screen. By dragging By rotating it, an angle of 75° can be formed.
6. Use the camera function to easily crop pictures
When making courseware, we often need to crop some pictures. Cropping can be completed using software such as Fireworks and Photoshop, but this is not suitable for some It is undoubtedly a difficult problem for teachers. The electronic whiteboard's camera function can crop pictures at any time. For example, if you want to crop a picture in a textbook, first download the required picture from the electronic textbook and open it in control mode, then click the camera area snapshot button, drag the cursor to select the area that needs to be cropped, and click again on the photo in the area behind the cursor. It will automatically paste to a blank page or the last used page. At this time, you can move, enlarge or reduce the cropped picture. Of course, you can also add the cropped picture to the gallery or copy it to other programs for use. Using the camera function, we can also crop and use useful content on web pages, Word documents or courseware.