The video tutorial introduces the OI sound, explaining it as a digraph formed by the letters O and Y. It compares this with the OI sound made by the letters O and I. The lesson includes interactive practice, using examples like 'toy', 'soy', and 'boy'. The instructor uses a magic box to find objects with the OI sound and guides students in writing the sound using letters O and Y. The session concludes with reading practice of words containing the OI sound, ensuring students can recognize and pronounce it correctly.

What did the teacher encourage students to do with their magic fingers?

What is the first word introduced in the lesson that uses the OI sound?

How does the word 'enjoy' relate to the OI sound?