diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -192,15 +192,10 @@ Courses | Duration | Effort | Prerequisites
 :-- | :--: | :--: | :--:
 [Essence of Linear Algebra](https://www.youtube.com/playlist?list=PLZHQObOWTQDPD3MizzM2xVFitgF8hE_ab) | - | - | pre-calculus
 [Linear Algebra - Foundations to Frontiers](https://www.edx.org/course/linear-algebra-foundations-frontiers-utaustinx-ut-5-04x#!) ([alt](http://ulaff.net/)) | 15 weeks | 8 hours/week | Essence of Linear Algebra
-[Calculus One](https://www.coursera.org/learn/calculus1)<sup>*1*</sup> ([alt](https://mooculus.osu.edu/)) | 16 weeks | 8-10 hours/week | pre-calculus
-[Calculus Two: Sequences and Series](https://www.coursera.org/learn/advanced-calculus)| 7 weeks | 9-10 hours/week | Calculus One
-[Mathematics for Computer Science](https://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-042j-mathematics-for-computer-science-spring-2015/index.htm) | 13 weeks | 5 hours/week | single variable calculus (Calculus Two)
-
-**<sup>1</sup> Note**: When you are enrolled, please see this
-[list of errors](https://www.coursera.org/learn/calculus1/discussions/forums/WcY9_8ayEeSWEiIAC0wC5g/threads/CgOJwV-jEeWncxKXIFxpFQ/replies/kH6u_2FPEeWukw4fFhIvKw)
-and
-[these recommendations](https://www.coursera.org/learn/calculus1/discussions/all/threads/W5P9mFY8EeWbVQrsfyQbuw/replies/XyyJflZDEeWBRg5dvElQww/comments/l-bON17nEeW9lgqcHapJBw)
-for how to progress through the course.
+[Calculus 1A: Differentiation](https://www.edx.org/course/calculus-1a-differentiation-mitx-18-01-1x-0) | 13 weeks | 6-10 hours/week | pre-calculus
+[Calculus 1B: Integration](https://www.edx.org/course/calculus-1b-integration-mitx-18-01-2x-0) | 13 weeks | 5-10 hours/week | Calculus 1A
+[Calculus 1C: Coordinate Systems & Infinite Series](https://www.edx.org/course/calculus-1c-coordinate-systems-infinite-mitx-18-01-3x-0) | 13 weeks | 5-10 hours/week | Calculus 1B
+[Mathematics for Computer Science](https://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-042j-mathematics-for-computer-science-spring-2015/index.htm) | 13 weeks | 5 hours/week | Calculus 1C
 
 ### Core systems
 
@@ -322,8 +317,7 @@ Courses | Duration | Effort | Prerequisites
 
 Courses | Duration | Effort | Prerequisites
 :-- | :--: | :--: | :--:
-[Calculus: Parametric Equations and Polar Coordinates](https://ocw.mit.edu/courses/mathematics/18-01sc-single-variable-calculus-fall-2010/unit-4-techniques-of-integration/part-c-parametric-equations-and-polar-coordinates/) | - | - | single-variable calculus (Calculus Two)
-[Multivariable Calculus](https://ocw.mit.edu/courses/mathematics/18-02sc-multivariable-calculus-fall-2010/index.htm) | 13 weeks | 12 hours/week | Parametric Equations and Polar Coordinates
+[Multivariable Calculus](https://ocw.mit.edu/courses/mathematics/18-02sc-multivariable-calculus-fall-2010/index.htm) | 13 weeks | 12 hours/week | MIT Calculus 1C
 [Introduction to Probability - The Science of Uncertainty](https://www.edx.org/course/introduction-probability-science-mitx-6-041x-2) | 18 weeks | 12 hours/week | Multivariable Calculus
 
 ### Advanced systems