The Ladek Invasion: Episode 2 by Marti Dumas
Series: Jaden Toussaint, The Greatest Book 2
Jaden Toussaint, 5 year-old scientist and all around cool dude, must save his school from a (possible) alien invasion. His only weapons are science, ninja dancing, and the super-powered brain power of his seriously awesome group of friends. Can Jaden Toussaint and his crew come up with a plan that doesn't involve (dunh-dunh-dunh...) the EXTERMINATOR?