Based on your search query, I believe GeoGebra could be a great fit for your needs.

GeoGebra is a dynamic mathematics software suite that also offers a wide range of features that could be beneficial for teaching geography, particularly about the landforms of Ethiopia.

Here's how GeoGebra can help:

1. Interactive Geometry Environment: You can use this feature to create interactive 2D and 3D models of Ethiopian landforms. This can help students visualize and understand the geographical features better.

2. GeoGebra Materials Platform: This platform allows you to upload and share GeoGebra applets with your students. You can create interactive worksheets or simulations related to Ethiopian landforms and share them with your students for a more engaging learning experience.

Remember, GeoGebra is free for non-commercial use by students and teachers, making it a cost-effective solution for your teaching needs.