Have fun while learning with set

There's nothing cooler than an educational toy that's fun, too.

Take the Hydrogen Fuel Rocket Set, which is way better than those baking soda-and-vinegar rockets you might have made in science class.

Just mix tap water with the included crystals of citric acid -- commonly found in lemon juice -- and pour it into the rocket's fuel generator. An electric current, provided by six D batteries, separates hydrogen molecules from the mixture. When the green light glows, press the ignition and the hydrogen ignites and expands, sending the rocket up to 10 stories into the air.

The manufacturer advises adult supervision for kids 10 and younger. The set is available for $49.95 at The Sharper Image stores.

-- By JOHN PRZYBYS