Euclid's Muse

your source for INTERACTIVE math apps


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Creating Apps

To create or upload an app, you need Geometry Expressions. Once you’ve created the app in Geometry Expressions, you can export it following the instructions in the video below, then upload the .html file that it generates here.

Pleae keep in mind the following regarding inputs and outputs:

  • All variables can be included as textboxes or sliders (functions can be included as textboxes or multiline textboxes)
    • Sliders only display in certain browsers, but slider inputs can also be animated in any browser
  • Points whose coordinates are constrained symbolically (x[0],y[0]) can be draggable
  • Points that are proportional along a line or curve can also be draggable (in place of the proportional constraint’s parameter)
  • Symbolic calculations can be included in the output, although they will be displayed as real outputs

Check out more detailed videos here: http://www.youtube.com/playlist?list=PL4CD2E6609E4639B4&feature=view_all.

Creating Images and Animations

Again, you need Geometry Expressions first of all. Then, draw your figure. Be sure to hide any constraints you don’t want showing and set up the variables how you want them. You can preview the animation by playing through the variable you want to animate in Geometry Expressions. Then, export the image/animation through the "export" menu item:

Export Button Locations in Geometry Expressions Export Button Locations in Geometry Expressions

If you are exporting a static image, we strongly recommend using the PNG format. The following video walks through the process of creating and using an animation in more detail, through a specific example.

Creating TI-NspireTM Files/Apps

Geometry Expressions can also export LUA apps (file->export->Lua App). If you export your figure as a lua app, you can easily convert it to a TI-Nspire app with TI-Nspire on your computer. Then, the .tns file you save can be loaded onto TI-Nspire calculators. This .tns file can also be loaded on Euclid’s Muse, alongside your HTML5/JavaScript App, so that others can load your apps onto their calculators.

Turning Apps into Images

If you’d like to download  an image of an interactive app, there are several options. If you use the Firefox web browser, you can right-click on the image part of the app and choose Save Image As. If you’re using a different browser, you can easily take a screenshot (PrtScn keyboard button on Windows, then paste into a document, powerpoint, etc) and crop it down to the necessary dimensions.

Ways for Teachers to use Euclid’s Muse for Diagrams and Assignments

Want to create interactive diagrams for students? We strongly recommend exporting apps and uploading them to Euclid’s Muse. This way, students can interact with them on their own time and on any device for homework, and Geometry Expressions doesn’t need to be on every device in the classroom. Students with access to tablets can interact with them through touch screens, optimizing the learning process by making math tangible.

Even if you don’t hive the time to create your own interactive apps for students, you can still take advantage of all of the apps that have been created by others. Here are some suggestions:

  • Find an app that poses a question (most do). Offer a prize or extra credit to any students who can solve the question (or make a solid attempt to), or assign an app (or multiple) for homework in place of the normal textbook homework for a night. Students will appreciate the opportunity to take a break from the standard format, and students who have difficulty with learning math with their learning style will get an opportunity to experience math in a completely different way. For apps where the solution is on-screen/visual, screenshots are a good way to document the work.
  • Find an app that illustrates a concept in your curriculum. Show and discuss the app during class, and offer the students a chance to interact with it. The students will be able to experience the concept in a different way, which will help increase understanding.
  • Find a fun or silly app (like this one) and start or end class with it one day (great for Modays and Fridays)! Have the students figure out how it was constructed mathematically.
  • Assign students the task of choosing an app from Euclid’s Muse themselves. The students could then present the app to the class, explain why they like it and how it works, etc., or they could do a bigger project which included figuring out and documenting how the app was constructed, doing background research on the topic, and creating a new app in response.
  • Ask your students to create their own app, giving them parameters and suggestions to help them out (students would need access to Geometry Expressions, of course).
  • Have contests in class where the class is broken into teams and each team must work together to solve an app or a series of apps (such as the heptagon, nonagon, hendecagon, etc. series).
Other ideas? Tell us and we’ll share them with other teachers!

Need more help?

Try Google, or contact us.


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