Mrs. Master is a disaster!
de Dan Gutman
In this eighth book in the new My Weirdest School series, it s Grandparents Day at Ella Mentry School! Alexia s grandmother Mrs. Master makes weird inventions for a living, but A.J. and the gang come up with the weirdest invention of all. And they re going to make a bazillion dollars from it! Will they succeed? Or will their great big idea be flushed down the drain?
