Primary 7 have been investigating microorganisms in Science. They have been exploring the three main categories of microbe- fungi, bacteria and viruses. The children carried out an experiment to investigate the conditions in which microorganisms, specifically mould, multiply. In groups, the class set up an experiment using bread, strawberries, cheese puffs, and cheese to observe which food item would mould quickest and which would mould the most. The children recorded these observations and concluded that light, heat and moisture help mould to grow.