# 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 Pre-Made 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 Non-Parallel 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 Excel Spreadsheet (xls) |

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) |