“Brain Juice” is a quick critical thinking brain warm up for students in grades 2-6. Students will get their “brain juices” flowing in preparation for class. I tell my students that we want our brain to stay juicy and ready for work, not dried out and dusty, unable to learn. I created these brain warm ups for my 2nd and 3rd grade gifted classes. These puzzles can be used for any class grades 2-6 who needs their brains “juiced up” for a day of learning!