Sketches for the grades 58 group (led by Judy and Nathalie) Unless otherwise noted, these sketches require Sketchpad 4.0 or later. Many of these documents contain multiple pages, in which case the previews show only one of the pages. These files remain the property of their respective authors. While you may use them in your classrooms, please contact their authors directly for permission to duplicate or disseminate. If you have difficulty downloading these documents by clicking on them, rightclick (Windows) or ctrlclick (Mac) their links and choose Download Link To Disk or its equivalent. For more information, read about configuring your Web browser. 
Sketch: Grouping.gsp
Accompanying Documents: A preliminary activity that introduces some Sketchpad basics as well as the idea of grouping: Grouping_Points.doc (for teachers); Grouping_Students.doc (worksheet for students); use Grouping_Teachers.doc for guidance on how to use the Grouping.gsp file with students. Authors: Nick Jackiw and Nathalie Sinclair 

Sketch: Pictures.gsp
(Geometry) Author: Judy Dussiaume 

Sketch: sorting.gsp
(Number sense and operations) Author: Nathalie Sinclair 

Sketch: Candle.gsp
(Geometry) Author: Judy Dussiaume (adapted from Michael Battista's ShapeMakers) 

Sketch: JumpAlong.gsp
(Number Sense and operations) Accompanying documents: JumpAlong_Teachers.doc Author: Nathalie Sinclair 

Sketch: GhostPaths.gsp
(Geometry) Accompanying documents: GhostPaths_Teachers.doc Author: Judy Dussiaume 

Sketch: CirclesAndSquares.gsp
(Number sense and operations; logical reasoning) Accompanying documents: CirclesAndSquares_Teachers.doc Author: Daniel Scher 

Sketch: ShaperGame.gsp
(Geometry) Author: Judy Dussiaume (adapted from Michael Battista's ShapeMakers) 

Sketch:ConstructMenu.gsp
(Tour of Sketchpad's construct menu; geometry) Author: Nathalie Sinclair 

Sketch: MysteryShapes.gsp
(Geometry) Author: Judy Dussiaume 

Some problems we looked at:  
Sketch: Balance.gsp (Number sense and operations; logical reasoning) Accompanying documents: Balance_Teachers.doc Author: Daniel Scher 

Sketch: TurningSquares.gsp
(Geometry; graphing; optimisation) Author: Nathalie Sinclair 

The mirror problem  Suppose a mirror was to be placed flat on a wall that is perpendicular to the floor. What is the shortest mirror a 6 foot tall person could use so as to be able to see an image in the mirror from the top of the head to the toes? Assume the person is standing 5 feet from the mirror. 
Tesselations  1. Construct an equilateral triangle and create a tesselation using any combination of transformations you want. Make sure you drag to verify that your triangles are "sticking" together! 2. Draw an arbitrary triangle. Can you find a way to create a tesselation using any combination of transformations? 
Carpet Problem  : What can you say about the shape created in the middle of the square? What relationships can you find between the original square and the shape in the middle? 