National and international initiatives

The Computing at School (CAS) Working Group provides a wide set of resources, including Computing in the national curriculum: A guide for primary teachers, which explains the core elements of the Primary Computing Curriculum, along with their own reasonably detailed KS1 to 4 Curriculum. They also offer extensive training sessions for primary teachers preparing for the Computing Curriculum. A good starting point is their documentation page. Similar is Naace, who, again, provide detailed curriculum breakdowns and resources.

The Curriculum Innovation Service: this is (roughly) what was the IT Branch of Bradford Education. If you've subscribed to the service, they offer Computing lesson plans including coding, along with appropriate training. If you're not a subscribing school, you can still buy individual components, including training. They also coordinate some local groups, including Bradford's CoderDojo and Computing at School (CAS) Working Group.

The Barefoot Project was set up to help primary teachers prepare for the Computing Curriculum, and to help think through embedding computing across their teaching. They offer exemplar teaching materials and training.

Computer Science 4 Fun provides free classroom resources and lesson plans, along with their sister site Teaching London Computing. Most are for KS2 and up.

On the commercial side, Rising Stars' Switched-on-Computing seems popular. You can download example plans from their main course website. The TES also has a series of lesson plans and other Scratch resources, along with a standalone activity.

Code Club provides everything you need to set up a four-term primary level coding club that takes KS1 and 2 children through Scratch, making webpages, and basic Python. The materials are free, but they also offer relatively cheap "Coding Club Pro" training sessions on the new primary Computing curriculum for teachers. One of the Co-founders is an ex-Burley pupil. There's a similar organisation AppsForGood, who aim more at secondary level.

Coding Club (note the different name from above) is a site associated with a series of really excellent Python books for KS2. They provide extensive lesson plans etc. for using the books with a coding club.

CoderDojo is a set of cooperative clubs for 7 to 17 year olds wanting to learn how to code. They have a wide variety of resources for helping mentors.

The numbers of girls and women going into coding have dropped dramatically, despite both using computers at least as much as the boys/men. While there are a number of international initiatives, including The Ada Initiative and National Center for Women & Information Technology, and a number of secondary and university organisations in the UK, there are limited resources at the primary level (though see NCWITs K-12 resources). 4 Ways to Recruit Girls to Try Computer Science is Code.orgs' pretty sound advice on this issue.

Year of Code is the government's initiative to get schools coding. It largely links to other sites.

Hour of Code UK the UK version of the Hour of Code site. Largely the same as the US site (but with some materials removed). The most useful UK page is the Resources page.