What is the House of Commons?
You may recognise it from the TV. It has long green benches and is usually show full of MPs.
This is where the MPs debate and vote. It is also where the Prime Minister has to face Question Time, when the other MPs can ask them anything they like. This takes place every Wednesday and is the busiest time of the week.
In short, this is where the people we vote for every election time stand up and make sure that the government are doing the right thing. When lots of people disagree, it can become loud and argumentative.