Websites
There are a huge number of websites that can aid the mathematics teacher (in no particular order).
https://thinkforwardeducators.org/blog/five-ways-to-start-teaching-fractions
https://global.oup.com/education/content/primary/series/making-numbers/?region=uk
https://www.thefa.com/competitions/uefa-euro-2020/school-pack/rome
https://mathsnoproblem.com/en/approach/fractions
https://themoffattgirls.com/teaching-simple-fractions/
https://mathsnoproblem.com/blog/teaching-tips/how-to-address-4-common-fractions-misconceptions
https://f.hubspotusercontent40.net/hubfs/5618249/Pages%20from%20UnderstandingMathWeTeach.pdf