Books in the House of Robots series in order

and elementary school will never be the same!It was never easy for Sammy Hayes-Rodriguez to fit in, so he's dreading the day when his genius mom insists he bring her newest invention to school: a walking, talking robot he calls E - for "Error".

Sammy Hayes-Rodriguez and his 'bro-bot' E are making new friends every day as E works as his bedridden sister Maddie's school proxy. But disaster strikes when E malfunctions just in time to be upstaged by the super-cool new robot on the block - and loses his ability to help Maddie.