Erica Martin
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Erica Martin

I started writing in elementary school and never stopped. I enjoy sharing stories about my hard-learned life lessons and writing advice.

Texas Instruments released its first graphing calculator, the TI-81, to the public in 1990. Designed for use in pre-algebra and algebra courses, it was superseded by other Texas Instruments m…

Big Calculator: How Texas Instruments Monopolized Math Class
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Maya Kosoff

More from Erica Martin

I started writing in elementary school and never stopped. I enjoy sharing stories about my hard-learned life lessons and writing advice.

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