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Geometry with GeoGebra - Step-by-Step Students Learn Geometry with GeoGebra
== You do NOT need to install GeoGebra to use these files === but it's free and great so here's the link: Get GeoGebra
GeoGebra-Math247 (Links to all GeoGebra resources on this site.)
Latest posts - Activity 4 - Parallelograms How to copy the link How to use zipped files?
Lesson 1 - Square 1
Learning:
Why a square is defined by the length of a side by constructing angles of given size ( in this case 90°) and segments of given size and how to check that two segments with common end point are of the same length. |

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GeoGebra Menus
- Lists of open menus wiith tool-icon and commands positions
in a handy two-page handout - pdf format.
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Lesson 2 - Side-Angle-Side Triangle Property
Learning: 4 Integrated Lessons:
- Assemble a triangle from two sides and an angle.
- Construct a triangle given 2 lengths and 1 angle measure with detailed directions.
- DIY - Do It Yourself construction like in-class (no directions)
- Why not just SA? Construction from just 1 length and 1 angle measure to see that SA gives infinitely many triangles.
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Activity 3 - Constructing Rectangles
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Activity 4 - Constructing Parallelograms
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- Numberline Activites with GeoGebra have been moved to the new section:
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- Numberline Activites with GeoGebra have been moved to the new section:
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How to copy the link
- Right-click on "Do the Lesson!"
- Select "Copy link location
- Go to where you want to paste the link
- Right-click and select "Paste"
How to use zipped files
- One-time
- Make a new folder.
- Download: Images_etc.zip
(zip of images and geogebra-javascript files)
- Unzip this file into your new folder.
- Each lesson
- Download the zipped file of the lesson you want.
- Unzip it into this same folder (automatically creates subfolders)
Math247 GeoGebra (links to all GeoGebra resources on this site) Got something special you want to see or show? Contact me.

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