Protractor Teacher
Alistair Shaw
About this app
- Age 10
- Updated Jan 23, 2024
- OS IOS
Editor reviews
Protractor Teacher is a classroom-ready geometry app that turns your device into a precise digital protractor. Ideal for teachers and students, it streamlines angle measurement, drawing, and demonstration for lessons, homework, and quick checks. With a clean interface and education-first design, it makes geometry visual, accurate, and easy to teach.
Key features
- Interactive on-screen protractor with rotation, flip, and snap to common angles
- Measure and draw angles on a blank grid or imported images with instant degree readouts
- Practice tools and quick tasks for student learning with immediate feedback
Why it stands out
- Accurate and intuitive controls reduce classroom friction and save time
- Designed for education scenarios, from whiteboard demos to individual practice
- Perfect for geometry learning, STEM activities, and math tutoring with keywords like geometry app, digital protractor, angle measurement, math teaching tool
Screenshots
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How to use:
1. Download and open the app, then set preferences such as units and theme for your classroom or study needs.
2. Choose a workspace: start on a blank grid or import an image or screenshot to measure directly on top of it.
3. Drag the protractor center to the vertex, rotate the baseline to align with one side, and adjust the second arm to read the angle instantly.
4. Use snap and fine-rotate controls for precision, add labels or notes, then save or share your annotated result.
5. Open Practice to attempt or create angle tasks, set target angles and tolerances, and view instant feedback to reinforce learning.