https://www.futurelearn.com/subjects/teaching-courses/teaching-maths
Using this link for future learning , become a top maths teacher with these online maths teaching courses exploring the fundamentals of the topic, and how to plan better lessons.
In this link , there are 9 online courses about asian teaching methods, fractions,decimals, percentages,proportions, ratios, scaleing ....etc
Using this link, it's very usefull to learn best teaching methods to understand maths concepts easily.