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22 'facts' you learned in school that have since been proven wrong

INSIDER Logo By Jacob Shamsian,Olivia Singh of INSIDER | Slide 1 of 23:  When you're trying to teach dozens of students the finer points of history and science, sometimes it's just easier to provide a simpler narrative. But as James Loewen chronicles in his classic book "Lies My Teacher Told Me: Everything Your American History Textbook Got Wrong," teaching simplistic narratives of history doesn't do anyone any good. The same issue exists in other subjects as well. No, Isaac Newton didn't "discover" gravity when an apple fell on his head. And yes, Pluto is still a planet - it's just a special kind of planet. Like many  myths, these stories often have a kernel of truth to them - it just isn't what you learned. Here are 22 things you may have learned in school that have since been proven wrong:

When you're trying to teach dozens of students the finer points of history and science, sometimes it's just easier to provide a simpler narrative.

But as James Loewen chronicles in his classic book "Lies My Teacher Told Me: Everything Your American History Textbook Got Wrong," teaching simplistic narratives of history doesn't do anyone any good.

The same issue exists in other subjects as well. No, Isaac Newton didn't "discover" gravity when an apple fell on his head. And yes, Pluto is still a planet - it's just a special kind of planet.

Like many myths, these stories often have a kernel of truth to them - it just isn't what you learned.

Here are 22 things you may have learned in school that have since been proven wrong:

© AP Photo/Rob Griffith

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