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A recent study found that using Sumdog for 30 minutes a week, in-class or at home, almost doubled children's fluency progress.
As long as you have a phone or laptop that can access the internet, you can use CK-12!
Can be accessed in school or at home via a computer, smartphone or tablet or through a web browser and our free app.
Our platform is designed to be simple and intuitive - you can use it without any training. However, to help you get the most out of CK-12, we also host live webinars, provide on-demand webinars, and run a free certification program.
Free training webinars available on a range of topics to help all users make the most out of the platform. Looking to use Sumdog for homework? Want to set an assessment? The dedicated Sumdog training team host regular live webinars on a range of topics that can be accessed as a recording at a time that suits you. Plus new online PD courses you can access anytime to help get the most out of the platform, included in every subscription.
Class roster can be uploaded, but individual users only need basic information. It takes about one minute.
It's quick and easy to get started. You can upload all your classes in a single sync with Wonde or Clever integration or simply upload your class spreadsheets.
Free Version Freemium Free Trial Paid Subscription One-Off Fee Hourly Rate
CK-12 has no subscription, no advertising and no licensing to schools or users. Everything on CK-12 is 100% free – forever. Get in touch if you wish to make a donation.
Free Version Freemium Free Trial Paid Subscription One-Off Fee Hourly Rate
Class, year group/grade and school subscriptions available from just £4.20 per pupil, per year. Multi-year discounts available.