Oklahoma school uncovers blackboard lessons from 1917 during renovations

When Oklahoma contractors started work on Emerson High School they never expected to stumble across this. As they removed chalkboards, to make way for new whiteboards, they found doodles and lesson plans from 1917, as if frozen in time.

On one board was a wheel used to teach multiplication, a technique that Emerson High Principal, Sherry Kishore, says she has never seen in her life.

A spokesperson for the school distract says they are working with the city to preserve the findings.