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Explore math with our beautiful, free online graphing calculator. Graph functions, plot points, visualize algebraic equations, add sliders, animate graphs, and more.

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https://www.youtube.com/watch?v=VOXYMRcWbF8

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https://fod.infobase.com/p_ViewVideo.aspx?xtid=94160&loid=395759&tScript=0

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https://www.mathnasium.com/math-centers/greatneck/news/algebra-in-everyday-life

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https://rmpbs.pbslearningmedia.org/resource/ketae.geo.area.circle/formulas-area-of-a-circle/

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Formulas: Area of a Circle | PBS LearningMedia

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Learning about formulas will help you develop a strong foundation for your work in geometry. This video explains the formula for finding the area of a circle.
This video segment is from the GED Connection Formulas video.

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https://fod.infobase.com/p_ViewVideo.aspx?xtid=10224&loid=2382&tScript=0

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Winer, M. L., & Battista, M. T. (2022). Investigating Students’ Proof Reasoning: Analyzing

Students’ Oral Proof Explanations and their Written Proofs in High School Geometry.

International Electronic Journal of Mathematics Education, 17(2), em0677.

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https://pdo.ascd.org/lmscourses/PD11OC129/media/CCSS_Math_K-5_M06_Reading_GMDII.pdf