Recap on the main teaching points and the chair announces the outcome of the vote.
4. Teachers' Background
The United States will send astronauts back to the Moon to prepare for exploration further afield, President George W Bush has announced.
He said astronauts will be back on the Moon by 2020, and will establish a lunar base to prepare for human exploration of Mars.
The US space agency will get an extra $1bn over five years and the US says the "affordable" programme, including plans to replace the space shuttle, will benefit all Americans.