Every time you use Check my answer on a helper, or work through a practice set, it’s noted here: which topics, how many you get right first time, and the ones worth another go.
Open any helper, switch to Check my answer, and try a problem. Each answer you check shows up here, along with the days you practiced. It all stays in this browser, on this device.
| Topic | Tried | Right first time | Needed a hint | Last practiced | Practice |
|---|
Private by design. Everything on this page stays in this browser on this device. Nothing is sent anywhere, there’s no account, and clearing your browser’s site data clears it too.