After applying what we learnt in I&E, we ranked our 7 different solutions according to their effectiveness:
- Have a motion sensor installed in the classroom.
- Appoint someone reliable who will always be involved in turning off the lights
- Use energy-saving lightbulbs.
- Hold a competition whereby students form groups of 4-5 and create a video to show others how to save electricity using their chosen solution. The best videos will win prizes.
- Hold an event where the school community creates an “ Earth Hour ” held in the school. All the lights, fans and air-cons will be turned off. Nobody will be allowed to use any electrical appliances.
- Hold a presentation/ a video on how to save energy.
- Power up the light bulbs using alternative energy. [For eg, solar energy]
Our chosen solution:
Have a motion sensor installed in the classroom.
The motion sensor would be connected to the light bulbs. If there is motion in the class, indicating that there are people present, the light bulbs will stay turned on. However, if there is nobody present, there will not be any motion, and the light bulbs will turn off automatically. This way,even if everyone forgets to turn off the light bulbs, no energy would be wasted. However, there are also negative impacts by using this solution. As the lights will turn off by itself, students will become dependant on the motion sensors. They will become more careless and will always forget to turn off the lights in the future if there are no longer any motion sensors installed.