If you are looking for free math resources, I found a website that offers peer-reviewed math ebooks for college and AP Courses. This website is OpenStax which is based in Rice University and supported by several foundations. Below are the links to the math ebooks. PreAlgebra Algebra Algebra and Trigonometry Precalculus Calculus I Calculus II […]

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# Posts by Guillermo Bautista

## 7 Must-See Mathematics Movies Inspired by True Events

I have watched many movies about mathematics, mathematicians, and about mathematics teachers, but I particularly like the seven below because they were inspired by true events. Although many of them diverge from actual events, I still find them more realistic compared to other movies of the same genre. For those who have not watched these […]

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## Understanding Domain and Range Part 4

In this post, we summarize the previous three articles about domain and range. In the first part of the series, we focused on the graphical meaning of domain and range. We have learned that the domain of a function can be interpreted as the projection of its graph to the x-axis. Similarly, the range of […]

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