In the second part of the Chitta Vittorio Maths Trail lesson, students revise the calendar, time, subtraction, rounding, and symmetry concepts. The lesson includes keywords such as polygons, rounding, and estimation, and uses the historical context of the Great Siege of Malta in 1565 for practical exercises, like rounding numbers. Students also explore the shape of a monument in Birgu’s main square and learn a song to master the rounding process, using numbers to round to the nearest ten, hundred, and thousand.