geogebra geometric sketchpad

geogebra geometric sketchpadSoftware introduction

GeoGebra geometry software is very rich in functions. You can draw points, vectors, line segments, straight lines, polygons, conic sections, and even functions on it. You can also change their properties afterwards; on the other hand, you can also directly enter equations. and point coordinates. Therefore, GeoGebra also has the ability to process variables (these variables can be a number, angle, vector or point coordinates). It can also differentiate and integrate functions to find the roots of equations or calculate the maximum and minimum values ​​of functions. So GeoGebra has the ability to handle both algebra and geometry.

geogebra geometric sketchpadSoftware features

​ ​ 1. Integrate three Chinese tutorials and online help to facilitate quick start.

​​ 2. Nearly 400 courseware examples are integrated to facilitate enthusiasts’ experience and reference (new).

3. Repackage and make the software more in line with the usage habits of Chinese people.

​​ 4. Chinese commands, no need to install java, you can use it after installation (new).

5. This software is suitable for teaching and learning mathematics in primary schools, junior high schools, high schools and universities.

geogebra geometric sketchpadSoftware function

1. Geometry window:

You can use the mouse to perform geometric drawing in the geometric area with the help of the drawing tools provided in the toolbar. Select one of the drawing tools from the toolbar, and you can use the tool usage tips (behind the toolbar) to learn how to use the selected tool. Any object produced in the geometric area has an algebraic character in the algebraic area.

Note: You can use the mouse to drag objects in the geometry area, and the algebraic features in the algebra area will also be dynamically updated at the same time. Each icon in the toolbar represents a tool box. The tool group contains some drawing tools with similar functions. You can open the tool box by pressing the small arrow in the lower right corner of the icon with the left mouse button.

Tip: Drawing tools are classified according to the nature of the objects they produce. For example, different types of points can be generated in the point tool box and the geometric transformation tool box.

2. Algebraic window:

You can directly enter algebraic expressions in the Geogebrar command area, and then press the Enter key. The entered algebraic expression will appear in the algebraic area, and the corresponding graphics will appear in the geometry area.

In the algebra area, mathematical objects are classified into free objects and derived objects. If an object is created without using any existing object, it is classified as a free object. If a newly generated object is generated by using other existing objects, it is classified as a derived object.

Tip: If you want to hide features in the algebraic area, you can specify the object as an auxiliary object, as follows:

In the algebra area, right-click on the object and select "Auxiliary Object" in the right-click menu, or select "Properties" in the pop-up menu, select the label "Basic" in the properties dialog box, and then select "Auxiliary Object" in front of the option Put a check mark in the checkbox. According to the default of the program, "auxiliary objects" will not appear in the algebra area, but you can select "auxiliary objects" in the "View" menu, and then you can see them in the algebra area.

​​You can modify the objects in the algebra area: first confirm that it is selected Move the tool and then double-click the object in the algebra area to directly edit the object's algebraic characteristic data in the text box. After pressing the Enter key, the object's graphical characteristics will also change accordingly. If you double-click a derived object in the algebra area, you can "redefine" the object in the dialog box that appears.

Geogebra also provides many commands. You can press the 'Command' button on the right side of the command area to open the command window table. After selecting a command in the menu (or directly entering the command in the command input box), press the F1 key to obtain The syntax structure of the command and the required parameters and other information.

3. Worksheet window:

In Geogebra’s worksheet area, each cell has a designated name, which is used to specify the location of the cell.

This is similar to an OFFICE worksheet. For example, the name of the cell in column A, row 1 is A1.

Note: When the cell name is used in an expression or command, the cell name represents the content data in the cell. This process is called cell data reference.

In the worksheet, you can not only enter numerical values, but also all mathematical objects supported by Geogebra, such as point coordinates, functions, commands, etc. For mathematical objects entered in the worksheet, Geogebra will immediately display its graphical characteristics in the geometry area, and the name of the object will correspond to the position in the worksheet, such as A5, C3, etc.

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