Geometer sketchpad activities how to#
Geometer sketchpad activities manual#
Geometer sketchpad activities software#
Geometer sketchpad activities windows#

Geometer sketchpad activities how to#

Here is a step-by-step process for how to use Sketchpad to construct a triangle: Straightedge Tool - can be used to draw line segments (default), rays, or lines Clicking and holding the mouse button can change these tools:Īrrow Tool - can be used to select objects (default) or to rotate or translate objects Two of the five major tools have a small arrow in their lower right corner. (This tutorial will not use the Custom Tool.)

Text Tool - Use this tool to add captions and name points in a sketch.Straightedge Tool - Use this tool to create line segments.Compass Tool - Use this tool to create circles by center and radius.Point Tool - Use this tool to place points in the sketch.Arrow Tool - Use this tool to select or drag objects.When you start Sketchpad, you will see six tools on the left side of the window.

Geometer sketchpad activities windows#

Versions are available for Macintosh and Windows operating systems.

Geometer sketchpad activities software#

Please note that this software is copyrighted and subject to a Fair Use Agreement. In this way, Sketchpad and software like it can allow users to discover geometric properties and come up with conjectures that will lead to proof.Īlthough this section is designed for new users of Sketchpad, users who are only familiar with an older version of Sketchpad may also find it useful.Ī limited version of Sketchpad 5 is available online at. For example, you can use Sketchpad to create a triangle with one right angle, and then explore the relationship between the three side lengths by moving the triangle’s points around while preserving the constructed right angle. One of the major benefits of dynamic geometry Sketchpad and software like it is the ability to quickly alter geometric objects while preserving the properties of their construction. This section of Part A is designed to introduce you to The Geometer’s Sketchpad, a dynamic geometry software program from Key Curriculum Press.

What does the point do? What does the segment do? Try moving both around and changing the size of the segment. Select both objects, and use the Construct menu to construct another circle. Place a point anywhere on your sketch, and then draw a segment in a different location. What happens if you select the points in the opposite order? Select them both, and construct a circle using the Construct menu. Place two points anywhere on your sketch. What happens when you move that point? What happens when you move the center point? The distance of this point from the center defines the radius of the circle. Notice that wherever you ended your circle, another point appears. Using Geometer’s Sketchpad, look at the following ways that you can construct a circle: a. When you construct an object using dynamic geometry software, you use the software’s tools to give the figure the necessary characteristics.

Geometer sketchpad activities manual#

If you are using a pencil and manual drawing tools, constructing requires that you use a compass and a straightedge. If not, or if you would like a refresher, please go to the tutorial.Īs you learned in Session 1, there is a difference between drawing a figure and constructing a figure. This session assumes you can do the following with Geometer’s Sketchpad: construct points and segments construct points on objects create midpoints construct lines that are parallel or perpendicular to given lines measure distances and angles and perform calculations on your measurements. In this session, you will begin to use the tools of Geometer’s Sketchpad to construct geometric figures and explore their properties. Such software can help you discover relationships among geometric figures, search for invariants (properties that do not change), and clarify the beginning stages of geometric proof. Dynamic geometry software like Geometer’s Sketchpad allows you to construct and manipulate geometric figures.