Protractor - Blackboard - Plastic - 0-180°

This large plastic blackboard protractor offers clear, bold angle markings and is specially designed for demonstrating angles on classroom whiteboards or blackboards. Measuring from 0 ° to 180 °, it allows teachers to model geometry, trigonometry, and measurement concepts in a highly visual way. Made from durable plastic, it is lightweight, easy to handle, and an essential teaching aid in any maths classroom. The large format ensures visibility even in larger learning spaces.

Educational Benefits

• Supports visual demonstrations of angle measurement and geometry.
• Helps reinforce spatial reasoning and protractor use in practical tasks.
• Ideal for teaching the properties of angles and polygons.
• Encourages interactive learning through board-based instruction.
• Suitable for both individual and group instruction.

Classroom Ideas

Use to model angle construction and measurement on the board.

Demonstrate reflex, obtuse, acute, and straight angles interactively.

Pair with string or chalk to form polygons and calculate angle sums.

Use as part of geometry-themed games or quiz activities.

Incorporate into trigonometry lessons to explain sine and cosine rules.

Specifications

• Measurement Range: 0-180 °
• Material: Durable plastic
• Size: Large format suitable for blackboard/whiteboard use
• Recommended Ages: 10+
• Application: Geometry, mathematics instruction