Primary 7 had great fun yesterday doing their science investigation.  They used a variety of different liquids to try to clean old dirty copper coins.  Water, washing up liquid, vinegar, cola, tomato ketchup, brown sauce and tabasco sauce were all used to try to clean the coins.  Everyone made a prediction as to what they thought would best clean the coins and after doing the investigation we all decided that tomato ketchup and tabasco sauce worked best.