As part of N5 Biology pupils learn about the heart and associated blood vessels. The class agreed that seeing is believing so they spilt into groups of two and each group got to dissect a sheep’s heart.   They identified the four main blood vessels entering and leaving the heart, along with the two main valves and the four chambers. Luckily it was a fine day as two of the pupils had to observe the dissections from outside, looking in through the windows.