In this lesson, the focus is on phonic strategies, particularly the 'oo' sound. The teacher guides students through an activity where they find words with the 'oo' sound in the book 'Aliens in Underpants.' Afterward, students sort and categorize these words based on different 'oo' sound representations. The lesson ends with a reflection on the complexity of the English language and the diverse ways the 'oo' sound is represented.