We have 1 cheats and tips on Nintendo DS. If you have any cheats or tips for Brain Quest: Grades 5 And 6 please send them in here. You can also ask your question on our Brain Quest: Grades 5 And 6 Questions & Answers page.
Go to the 'Options' screen and select 'Cheats'. Then enter the case sensitive code 'MADCOW' (without the quotes).