Lost my pen

i am kind of sad about today, i lost my expensive pen at school. i do know when it happened, in science this morning, we did a pract where we extracted DNA from a strawberry, it was definetly in the pen pocket of my lab coat then. i did indeed check the lab coat i wore after recess when i realised my pen was missing and it was not there, i also emailed the teacher who is in that lab most often if…