This smartboard file helps build a visual understanding for the size of the square root of 2. This lesson can be integrated with many different curriculums. A set of directions (pdf.) are attached to the zipped file. The file incorporates the students using a geoboard (11 by 11 peg) or a communicator with a geoboard template. A copy of the geoboard template is also included in the zipped file.
If you do not have a Smartboard, but you do have a Promethean board or a projector attached to your computer, you can still use this product by using Smart Notebook Interactive Viewer. This program is a free download from www.smarttech.com . You can operate the screen with the pens on the Promethean board or a mouse when use the projector.