The children learned all about the technique that police use to take criminals finger prints.
Firstly, they took in turns to roll their fingers carefully into the special ink and onto their charts.
The children were fascinated to find out that every single person has a completely different finger print - even identical twins have their own unique finger prints!
Next, the children got to print their finger onto a balloon and blow it up to see what different patterns they each have.
'My right thumb has an accidental whorl in it!'
Yakoub, Italy Class
'I found a tented arch and a radial loop.'
David, Germany class
Next week the children are going to become detectives and learn how to search for clues.
