NumbotsPupils choose their own Bot before launching into ‘Story’ and ‘Challenge’ modes. As they progress, pupils collect achievement badges and unlock hundreds of new levels and challenges. In the Story Mode they will also discover parts, helping RustyBot upgrade from Rust to Diamond - so he can shine inside and out. This is a great way for children of all ages to practise their counting and calculating skills. Your child's username and password for this app is the same as their username and password for TTRS, which can be found in the front of reading journals.