Custom App with Pen Tool: Use and Customize for Your Own Use


  1. Drag a picture inside this app.
  2. Zoom in and out. Position and size you picture the way you want.
  3. Right click on the picture. Select FIX OBJECT.
  4. Right click on picture again. Go to SETTINGS. Choose SET BACKGROUND IMAGE.
  5. Right click on points A and B. Uncheck SHOW OBJECT (to hide them).
  6. Use the pen tool to draw within the picture.
  7. You can zoom in zoom out at any time.
  • Steps 1-7 are illustrated in the video below.
  • You can also copy the original app to start creating your own custom activity where such functionality is needed.

See directions below.


This custom app also functions quite well in GeoGebra Classroom!

Demo in GeoGebra Classroom. Teacher view on left. Student view on right.