Mathematics Rebooted might interest both mathematics teachers and those who are not mathematics specialists but who would like to understand more about how school mathematics fits together and links to advanced ideas.
Teachers who work with pre-university students might be interested in my research-based books for undergraduates. These are designed to be read in preparation for university study in degrees involving mathematics.
Teachers interested in learning about research in mathematics education might want to explore the website of Loughborough University’s Mathematics Education Centre (MEC), of which I am Head. You are also welcome to contact my colleague Ian Jones to sign up for our newsletter for schools. If you are interested in my research in particular, start with the information for mathematicians, and then explore that for researchers. Teachers interested in learning to conduct research in mathematics education can find out more by looking at the information on PhD study in the MEC, including the page specifically for teachers.