Century-Old Lesson: Chalkboards From 1917 Discovered in Oklahoma Classroom

Educators of Emerson High School in Oklahoma were shocked when contractors began working to update four classrooms; they uncovered chalkboards chock full of pristine writings and drawings dating back to 1917. What they found was so well-preserved, it was like stepping back into a real-life history lesson.

Check out the full story on NBC, and the incredible photos below.

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Multiplication table (thank goodness for calculators…)

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ED1EdPaImages via Imgur.