I have 3 classes and I can't leave the last one out so here they are.

• Ilaria, modeling the motion of a ball looping the loop
• Steinar, looking at the separation of balls rolling down a stepped track
• Shah, investiagting the distance water jets as a relation to depth of water in a bucket
• Kunlek, projecting balls out of a tube
• Ekaterina, dropping coffee filters
• Emrys, vibrating elastic strings

All good stuff.