Portal on a Graphing Calculator

Portal Comes to Graphing Calculators, Makes Them Useful Again
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<blockquote class="wp-embedded-content" data-secret="pfCBHzvvpm"><a href="https://www.themarysue.com/portal-graphing-calculator/">Portal Comes to Graphing Calculators, Makes Them Useful Again</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://www.themarysue.com/portal-graphing-calculator/embed/#?secret=pfCBHzvvpm" width="600" height="400" title="&#8220;Portal Comes to Graphing Calculators, Makes Them Useful Again&#8221; &#8212; The Mary Sue" data-secret="pfCBHzvvpm" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script>
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