Monthly Archives: February 2019

Year 5 are growing bacteria!

As part of their topic work on the Black Death of the Middle Ages, Year 5 have been exploring how quickly bacteria can grow and spread.

Working scientifically, the children tested how clean their hands were by putting a finger print onto nutrient agar jelly – the perfect conditions for micro-organisms including bacteria to grow.

Judging by the Day 10 results below for Saturn, some of the hands weren’t as clean as they could’ve been! Meanwhile, I’m off to clean my computer keyboard (the source of the largest growth!)…

The yellow/orange dots on the photos show the micro-organisms that are currently growing.