For those of you interested in learning the process of logic-checking systematically, I recently updated a curriculum associated with this site that will let you learn the critical thinking techniques needed to become a skilled logic checker in sequence.
Speaking of critical thinking, I also just released information on a set of high-leverage critical thinking teaching practices that can improve teaching and learning of critical thinking at any grade level. Those practices provide ways educators can implement the recommendations I make at the end of my recently released MIT Press book Critical Thinking Essentials.
Here's a nifty little infographic that illustrates some of the principles behind high-leverage critical thinking teaching practices:
