Eyesight and Hearing - Large Protractor

When exploring the topics of eyesight and hearing, a large protractor can be an invaluable tool for educational demonstrations and practical activities. A protractor template is a clear, usually semi-circular instrument marked with degrees from 0 to 180, which is used to measure angles. In the context of eyesight, a protractor can help illustrate the concept of visual fields and the range of vision, while in hearing, it might be used to explain sound direction and the concept of sound localization. The large size of the protractor ensures that it is easily visible to all students, making it an effective teaching aid for classroom demonstrations.

The protractor template itself is simple to use. It typically lies flat on a surface with a baseline that aligns with the straight edge of the angle to be measured. The centre point of the protractor's straight edge, known as the origin, is placed at the vertex of the angle. By reading off the scale where the other side of the angle intersects with the protractor's curved edge, the angle's measurement can be accurately determined. This hands-on approach not only aids in teaching mathematical concepts related to angles but also helps students visualise and understand spatial relationships in both vision and hearing.