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.

No comments:

Post a Comment

Why Mechanics Questions Go Wrong (It’s Not the Maths… It’s the Setup)

  Why Mechanics Questions Go Wrong (It’s Not the Maths… It’s the Setup) “Most students lose marks in mechanics before they even start the ...