Sight-reading is the ability to read and play a sheet of music you have never seen or practiced before – right on the spot, and in the case of an exam or evaluation - in front of other people.
*Be sure to scan the key signature, time signature, clefs, dynamics and starting point for each hand.
*Scan the rhythm before playing the notes so that each note sounds intentional and is held for the correct duration of time.
*Go slowly from the very beginning in order to maintain a consistent tempo. It is better to sight-read slowly and accurately than to start over multiple times.
Jodi Russell, B.M.,M.M.,NCTM