Monday 25 March 2024

Cheek cells +


 What are all those little black things with my cheek cells asked a student, looking down the microscope at his freshly prepared cheek cell slide. These are bacteria. He went and brushed his teeth immediately and prepared a new slide.

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Current speed on the River Thames

  Measuring the current speed on the River Thames. It has dropped considerably in the past couple of weeks and was doing a steady 1.1 mph