Article 1 - establishes the first of the three branches of the government, the Legislature; and defines the House of Representatives and Senate.
Article 2 - establishes the Executive branch of the government; establishes powers and duties of President.
Article 3 - establishes the Supreme Court and the Judicial branch
Article 4 - deals with the states and the powers and rights of the citizens
Article 5 - deals with amending or changing the constitution
Article 6 - deals with the United States and how it uses the constitution.
Article 7 - details for the ratification or acceptance of the constitution