# Geogebra

/Tag:Geogebra

Several years of work are coming together nicely. Unfortunately, I still have tests to grade. There are so many properties for students to know and remember in the quadrilaterals unit of Geometry. I started by creating flash cards on three sheets of paper. Students had to write the property based on the "quadrilateral hieroglyphics" displayed [...]

By | 2019-02-10T22:00:19+00:00 February 10th, 2019|Geometry|0 Comments

## Similar Polygon Exploration in Geogebra

Use Geogebra to create similar polygons, compare the scale factor of a dilation with the side lengths of the image and preimage compare the scale factor with the ratio of the perimeters compare the scale factor with the ratio of the areas https://youtu.be/S2orPH6CqLk A written version of the investigation is below. Similar Polygon Exploration To see [...]

By | 2017-11-13T22:01:54+00:00 January 4th, 2017|Geometry|2 Comments

## A Tale of Three Classes

Two weeks ago I wrote a post called Equations from Data. In it, my pre-calculus students first were charged with finding a curve of best fit for global iPod sales data from 2006 to the present. Then they were asked to find an equation for the curve of best fit for global iPhone sales. The goal was to show [...]

By | 2017-11-13T22:01:55+00:00 October 16th, 2016|edtech|0 Comments

## Find an equation of best fit in Geogebra

Go to Geogebra.org. Click on Geogebra Math Apps. Choose Spreadsheet. Enter your data in the spreadsheet. Click in the graph area, then right click and choose Graphics. In the Basic tab, change your x- and y- mins and maxes to represent your data points. Click on the Grid tab and Show Grid if you want. [...]

By | 2017-11-13T22:01:55+00:00 September 24th, 2016|Graphing Calculator, PreCalculus, Statistics|0 Comments

## Using Geogebra to Explore Properties of Triangles

To encourage our teaching staff to use iPads in their classrooms, our administration has introduced an App Challenge. Teachers are asked to try a new app each semester, record a video of the app in use, and write about the experience. I love technology so it is not a stretch for me to try out [...]

By | 2017-11-13T22:01:57+00:00 January 10th, 2016|Geometry|0 Comments