WS-Geometry


 * Workshop -** **Wednesday July 28, 2010** **-** **10:15-11:45 aaaaaaaaaaaaaaaaaaaaaaaaaaa Session Page**


 * Leader:** Paul Thomas **,** K12, Inc.


 * Title:** C reating GeoGebra Activities for a Virtual Geometry Course


 * Brief Description:** GeoGebra’s tools allow teachers to create opportunities for students to engage with geometry content in newer virtual educational environments. Some concepts are best learned through explorations for which students are provided a complete dynamic construction. Other concepts are best presented as opportunities for students to create their own constructions. In this workshop, sample GeoGebra constructions as well as accompanying instructions and questions will be provided.

Duration: **90 min.** Room: **Williams 319** Notes:** 30 people, [|signup required]

Conference Schedule

Goal
GeoGebra’s tools allow teachers to create opportunities for students to engage with geometry content, in both conventional brick-and-mortar school environments and in newer virtual educational environments. All teachers in the 21st century must be able to work in both, and GeoGebra represents a new generation of instructional tool that can help teachers work effectively in both. Some concepts are best learned through explorations for which students are provided a complete dynamic construction. Other concepts are best presented as opportunities for students to create their own constructions. Whether as exploration or construction activity, two key principles govern what teachers must provide: Instructions must be clear, and questions must lead students toward the right discoveries while triggering effective math discussions. In this workshop, example GeoGebra constructions as well as accompanying instructions and questions will be provided. After the session, participants will be better prepared to put together exploration or construction activities for a high school geometry course, whether in a brick-and-mortar or virtual educational environment.

Workshop Structure
1. To start, the presenter will show the beginning of an online lesson so participants can see what leads up to a particular GeoGebra activity. 2. Participants will then use provided instructions to create sketches and answer questions. 3. As a group, we will discuss the purpose and structure of the construction activity and how it fits into the overall lesson. Participants will also suggest other questions and follow-up activities. 4. Next, the presenter will show the beginning of a different lesson, then participants will use provided GeoGebra worksheets and Student Guides to explore geometric concepts and answer questions. 5. As a group, we will discuss the purpose and structure of the exploration activity. 6. Working in pairs, participants will create Student Guide instructions for a GeoGebra activity with given purpose. 7. Participants will try each other’s Student Guides, and provide constructive feedback. 8. The presenter will finish by answering questions about how GeoGebra is used throughout the high school Geometry course.

Examples with Resources
Construction Activity: Tangent Segments (Student Guide and Answer GGB file) [|Segments of Tangents, Secants, and Chords, Part 1] (pdf) GeoGebra Files: [|TangentSegments]

Exploration Activity: ASA, SAS, SSS Triangle Congruence (Student Guide and three exploration GGB files) [|Lesson 3: Triangle Congruence: SSS, SAS, and ASA, Part 1] (pdf)

GeoGebra Files: [|SSS] [|SAS] [|ASA]