The House of Representatives has 435 members, each of whom represent a district which is determined by population. Each representative serves a two-year term. For more information about the House, check out The House Explained.
The legislative branch is the lawmaking branch of the government. The federal government has a bi-cameral, meaning two houses, legislature comprised of the House of Representatives and the Senate. Members of the House and Senate are elected by the people in their district or state in direct elections.
In the Senate each state is represented by two senators that serve a six year term. The election of senators is staggered so that approximately one-third of the senate is up for re-election at any one time. For more information about the Senate, check out Learning About the Senate.