The Geometer’s Sketchpad™ (GSP)
GSP can be used to create dynamic shapes to explore mathematics. Many activities with premade sketches are available for students to explore number relationships, geometry, measurement and patterning. 
In order to use .gsp files supplied on this site, Sketchpad must be downloaded and installed on the computer.
Installation Instructions
1. Download the correct version of the software for your operating system from
www.keypress.com/gsp/download.
2. Run the installer.
3. When you are prompted, enter the License Name and Authorization Code supplied by your school.
Geometer’s Sketchpad PreMade Sketches
2D Shapes
3D Figures
Rectangular and Triangular Prisms – Drawing 3D (gsp) 
Rectangular and Triangular Prisms – Nets (gsp) 
Angle Properties
Angle Properties (gsp) 
Exploring Angles (gsp) 
Exterior Angles of a Polygon (gsp) 
Interior Angles of a Polygon (gsp) 
Parallel and NonParallel Lines (gsp) 
St. Peters Portico Investigation (gsp) 
Worcester Railway Bridge Investigation (gsp) 
Area and Perimeter
Decimals
Zooming Decimals (gsp) 
Zooming to Millions (gsp) 
Expressions and Equations
Fractions
Comparing Fractions Strategies (gsp) 
Comparing Fractions to One (gsp) 
Functions
Graphing Points
Integers
Interest
Simple and Compound Interest (gsp) 
Linear Relationships
Mellow Yellow (gsp) 
Measures of Central Tendency
Mean and Median using Decimal Numbers – Mean and Median (gsp) 
Mean and Median Support Document (pdf) 
Mean and Median Support (video) 
Operations
Decimal Multiplication Area Model (gsp) 
Interactive Area Model (gsp) 
Percent
Face Measurements (gsp) 
Giraffe Proportions (gsp) 
Working with Giraffe (gsp) 
Pythagorean Theorem
Pythagorean Relationships (gsp) 
Ratios
Ratio Relationships (gsp) 
Ratio Relationships Support Document (pdf) 
Ratio Relationships Support (video) 
Slope
Average and Instantaneous Rate of Change – Go With the Flow (gsp)  
Go With the Flow Support (Fathom File)  
Go With the Flow Support  Exemplar 1 (Fathom File)  
Go With the Flow Support Exemplar 2 (Fathom File)  
Secant Slope (gsp)  
Slope of a Line – Motion Musing (gsp)  
Motion Musing Support Document 1 (pdf)  
Motion Musing Support Document 2 (pdf)  
Motion Musing Support (video 1)  
Motion Musing Support (video 2)  
Motion Musing Support (video 3)  
Slope of Tangent  y = ax2 (gsp) 

Slope of Tangent  y = ax3 (gsp)  
Slope of Tangent  y = x2 + ax (gsp)  
Slope of Tangent  y = x3 + ax2 (gsp) 
Surface Area and Volume
Triangular Prisms – Paper Prisms (gsp) 
Volume of Right Prisms (gsp) 
Volume of Right Prisms Support Document (pdf) 
Volume of Right Prisms Support (video) 
Transformations
Block Symmetry (gsp) 
Dilatations (gsp) 
Dilatations Support Document (pdf) 
Dilatations Support (Video 1) 
Dilatations Support (Video 2) 
Dilatations Support (Video 3) 
Reflections (gsp) 
Reflections Support Document (pdf) 
Reflections Support (video) 
Trigonometry
Cosine Law (gsp) 
Motion Graph – Hoola Hoop CBR Experiment (gsp) 
Periodic Motion and Trig Graphs (gsp) 
Sine Law (gsp) 
Grade 11 Sketches (zip) 