The Virginia Plan called for a strong central government in which more power was given to states with a larger population. It called for a bicameral legislature and for a chief executive and judiciary to be elected by legislature.
Commerce and Slave Trade Compromise
The new Jersey Plan called for a unicameral legislature and for each state to have equal votes. Was better for small states than the Virginia Plan and more closely resembled the Articles of Confederation.
Combined ideas found in both the Virginia Plan and the New Jersey Plan. It provided the states with equal representation in the Senate (two votes per state), and Representation according to population in the House of Representatives. Members of the House are elected by popular vote and members of the senate are appointed by state legislatures.
Presidency Compromise/Electoral College
This was an agreement which protected slave holders. It denied congress the power to tax the export of goods from any state and also denied congress' power to act on the slave trade
Each slave would account for 3/5ths of a person when counting representation within a state. It was a compromise created so that southern states could count their slaves without upsetting northern states.
When the convention decided it would be best to vote a chief execute into office, they settled that the electoral college would most benefit the American people. In the electoral college, each state gets a certain amount of votes according to their population. The representatives in each state are bound to pick whichever candidate is most popular in that state.