'oral instruction' is a correct and usable term in written English.
You can use it to refer to instruction that is received verbally rather than in written form. For example, "The chef was trained through oral instruction, rather than by reading a cookbook."
Oral instruction and teaching by example were the chief methods of education.
On this account the oral instruction of classes in a Normal school is greatly to be preferred to any other mode.
Kerygma and catechesis, in Christian theology, respectively, the initial proclamation of the gospel message and the oral instruction given before baptism to those who have accepted the message.
The role of writing in this Oriental world should not be exaggerated, of course; oral instruction still held first place by far.
They received written and oral instruction emphasizing that participation was not related to treatment or prospects for release, and that participants were free to withdraw from the study at any time.
The most common form of these wise sayings, which were intended for oral instruction especially in the schools run by the sages for the young men at the court, was the mashal (Hebrew: "comparison" or "parable," although frequently translated "proverb").
QMT involves following a structured set of simple oral instructions, by stepping to the instructed corner in a 50 × 50 cm square.
Even oral instructions may prove distracting.
Jaguar's navigation system gives the driver oral instructions from a computerized voice.
"Such oral instructions and written advisory will avoid voter confusion," Mr. Brochin wrote.
Saul issued Tim oral instructions: I want Hussein's military penetrated.
