In this year 3 math lesson, students revisited previous tasks on multiplication and division story sums before exploring the concept of lines, particularly straight and curved lines. The teacher introduced the historical context of lines, referencing Euclid, an ancient Greek mathematician known for his work on geometry. By the end of the lesson, the students aimed to recognize and draw examples of straight and curved lines using various resources like rulers and colored pencils, with a focus on understanding horizontal and vertical lines.