Here's a diagram of topics in maths and some of the connections:

Maths Tree

Here's a fantastic piece of work showing connections between GCSE topics, but it's harder to explore:

• http://www.greatmathsteachingideas.com/2014/01/05/youve-never-seen-the-gcse-maths-curriculum-like-this-before/

• https://undergroundmathematics.org/

• Mermaid: https://github.com/knsv/mermaid
• http://www.mei.org.uk/2017-sow
• http://mei.org.uk/files/pdf/FPT_Specification.pdf
• http://archives.math.utk.edu/topics/
• http://en.wikipedia.org/wiki/Lists_of_mathematics_topics
• http://www.cs.cmu.edu/~hanxiaol/publications/yang-wsdm15.pdf
• http://uk.ixl.com/math/topics
• http://www.greatmathsteachingideas.com/2014/01/05/youve-never-seen-the-gcse-maths-curriculum-like-this-before/
• http://ime.math.arizona.edu/progressions/
• http://turnonccmath.net/
• https://mathspace-1.wistia.com/medias/jcmfmvgq4x (@ 1 min)
  • https://twitter.com/timstirrup/status/552104437364588544
• http://commoncoretools.me/forums/forum/public/
• Algebra, Abstract and Concrete: Stressing Symmetry
• https://twitter.com/fjmubeen/with_replies
• http://www.resourceaholic.com/2016/06/SoW.html
• https://twitter.com/MrCarterMaths
  • http://mrcartermaths.com/

• @RogoNic

Quotation from Tim Berners-Lee