The 2nd edition of 'How Learning Happens' is finally out! and @P_A_Kirschner and I are very excited to share it. Here's a brief preview of what's new ⬇️ 🧵 ➡️ Firstly, we felt that the missing elements in the first part of the 1st edition all fell within the broader category of memory and specifically how it underpins, foregrounds, and interacts with learning so we added a new section featuring 5 seminal works and why educators should know about them. ➡️There is a new foreward by John Sweller. ➡️ We also added a second closing chapter in which, after discussing the ten deadly sins of education (the original concluding chapter), we discuss the ways in which seminal research can become distorted into dysfunctional implementations of its original form, what Brown and Campione christened “Lethal Mutations”. ➡️ Finally we’ve updated, checked, and rechecked the links and QR‑codes, added some links to new additional materials, and corrected mistakes that we and others found in the original book.