If you do not have an account on www.splashmath.com, you need to create a new account for web access of the 3rd grade app. You can either create an account within the app on your iPad/iPhone or on our website www.splashmath.com If you create the account on the website, you will need to link the same with your iPad/iPhone device, to sync the data and progress between different devices.
If you already have an account on www.splashmath.com, you can link the device (iPad/iPhone) that you are using with the same account. This will ensure that all your data is in one place. Even if you have selected another grade on the web, the data will be synced between web, iPhone and iPad.
How to link your device, click here.