With guidance, using the internet in the classroom can improve their learning experience and introduce them to new things without even having to leave their home town. More Interaction â More Collaboration. Technology allows people to stay in touch more often, and wherever they are. You can harness easier interaction in schools to allow children to work together, more often. The best learning platforms have messaging systems, allowing children and teachers to talk via messages.
Whenever you get iron, water and oxygen together, you get rust. So the best way to prevent it is to keep them apart; that's what paint does, or the spray-on wax and oil coatings that the car protection companies sell. Keep your tools dry; wipe down your bike after a ride; keep the water away and it can't rust.ur friends at Instructables show how you can use electricity to remove rust: ...basically you set up a conductive solution and insert some sacrificial anodes. You hang your rusted tool in the solution and attach it to the negative end of the power supply. You attach the positive end to the anode and turn on the power.
Step-by-Step Instructions. 1  Start by rinsing the area to remove as much rust as possible. ( 2 Don't worry about soap, cleaners, etc and never use harsh chemicals, such as dangerous bleach 3  .). If possible, I recommend soaking the rusted area for at least 30 seconds in the lemon juice or vinegar. Be sure you don't leave any rust behind on metals, as it can spread. 2  For really stubborn rust, you may need to resort to applying a diluted mixture of ammonia (1 tsp per cup of warm water) and allowing the area to soak. 3  Rinse and repeat the steps on how to remove rust if needed.