“BLOOMS” AND LADDERS: TeachThought takes a page out of Jean Piaget’s book this week with this list of inquiry-based iPad apps. But they aren’t the only ones looking to spark the investigative side in students -- everyone seems to be climbing Bloom’s Taxonomy ladder this week, attempting to scale “Analyze” and beyond. If you aren’t sure where to start with apps, this collection organizes (mostly) free apps by level.