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The projector - Coggle Diagram
The projector
Costs
high brightness
ordinary 2000-3000 yuan or so
price depends on how many people you use, and how big the classroom area.
Classroom projectors
Background
Drawbacks of traditional blackboards
Waste of time
Limitation of content presentation
Health
Necessities of improvement
Convenience
Efficiency
Interaction
Benefits and Drawbacks
Drawbacks
Teachers
It is a challenge for some teachers who are not familiar with electronic devices.
Students
Students' attention was excessively attracted by the PPT
Benefits
Teachers
Increasing more teaching activities
Using more teaching resources
Recordings
Pictures
Audio
Video
Students
Students will improve their learning enthusiasm
Development trend forecast of portable projector
the brightness of the LED light source is improved
the mass production of micro projector chip also reduces the cost of micro projector