In order from the sun, the terrestrial planets are Mercury, Venus, Earth, and Mars.
The gas giants all lie beyond Mars and the asteroid belt and are, in order: Jupiter, Saturn, Uranus, and Neptune.
Pluto was downgraded in 2008 to a "dwarf planet", so it is no longer counted as a planet.
You can find more information here:
http://www.kidsastronomy.com/solar_system.htm