
Perhaps this is what your "schoolchild" needs.

Random ruminations of an Evolutionary Technologist (a.k.a. Edublogger) who believes that "It's not what you take but what you leave behind..." Fun part of that could put him in good company with the likes of Benjamin Franklin, Eisenhower, JFK, John Lennon and Steven Spielberg. Longer list is here. Serious part is that he also focusses on Technology, Economics and Society.
"PHUKET, Thailand--Social networks such as Facebook have not only revolutionized the way people communicate over the Web but are also seen as useful to businesses."
"In addition to low fuel consumption, the VCM engine also reduces exhaust emissions, helping meet govt Ultra-Low Emissions and 2010 fuel consumption standards, making it eligible for preferential 'Green Tax' treatment. The engine achieves this by combining high-density catalytic converters located directly below each cylinder head for further improved exhaust gas processing at low engine temperatures with better air/fuel ratio control.
VCM continuously analyzes throttle opening, vehicle speed, engine speed, and gearing to determine that the car is cruising, and then idles the intake and exhaust valves of the three cylinders in the rear cylinder bank. With zero valve lift, the cylinders are sealed, and no fuel is injected. Pumping losses are thus reduced by as much as 65% and low fuel consumption is realized.
When operating in 3-cylinder mode, engine vibration is reduced by extrapolating vibration from the change in crankshaft rotation speed and sending the information to the 'active control' engine mount, which compresses/extends an actuator in same-phase, same-period motion to dampen the engine mount. Similarly, a speaker creates an opposite phase sound or 'active noise control', to provide a cancelling effect, for a quieter interior which leaves the driver unaware of changes in cylinder activation."