In this episode of Progressively Incorrect, I’m re-joined by Doug Lemov—author of Teach Like a Champion and The Coach’s Guide to Teaching, and one of the most influential figures in the history of education. Doug has spent decades studying what the best teachers do differently—turning the art and science of teaching into something that can … Continue reading S5E08: Doug Lemov on “What to Do” and Active Observation Techniques
S5E07: Denarius Frazier on Belonging, Rigor, and Scaling Effective Teaching
In this episode of Progressively Incorrect, I’m joined by Denarius Frazier—Regional Superintendent of Instruction at Uncommon Schools, co-author of Reconnect: Building School Culture for Meaning, Purpose, and Belonging, and perhaps the best teacher ever captured on film. Link to blog and video Denarius is one of the most thoughtful and influential voices in the Teach … Continue reading S5E07: Denarius Frazier on Belonging, Rigor, and Scaling Effective Teaching
S5E06: Jessica Colleu Terradas & Jon Owen on Direct Instruction Without Borders
In this podcast episode, I’m joined by Jessica Colleu Terradas and Jon Owen, two international leaders bringing Engelmann’s Direct Instruction to life in Australia and the UK. This marks a milestone in the Direct Instruction Podcast—our first global double feature exploring what high-fidelity DI looks like beyond the United States. https://youtu.be/eIMhSdeOLsM?si=8w_Skb2LyMqcGg46 Jessica, based in Australia, … Continue reading S5E06: Jessica Colleu Terradas & Jon Owen on Direct Instruction Without Borders
S5E05: Anna Stokke on Where Math Education Went Wrong—and How to Fix It
In this episode of Progressively Incorrect, I’m joined by Anna Stokke—mathematician, professor, and host of the Chalk & Talk podcast. Anna has become one of the most influential voices calling for a return to clarity, structure, and evidence in math instruction. We explore how her conversations on chalk & talk have shaped—and sometimes challenged—her own … Continue reading S5E05: Anna Stokke on Where Math Education Went Wrong—and How to Fix It
S5E04: Marcie Samayoa on NGSS and Explicit Science Instruction
In this episode, I’m joined by Marcie Samayoa—science teacher, cognitive science enthusiast, and blogger of Scientists in the Making. Marcie shares the origin story behind her innovative classroom blog and explains how it grew out of a desire to make science learning more equitable, evidence-based, and joyful. We dive into some of the most persistent … Continue reading S5E04: Marcie Samayoa on NGSS and Explicit Science Instruction
S4E17: Kris Boulton on Atomization, DI Principles, and Unstoppable Learning
In this episode, I chat with Kris Boulton, a legend in the space of translating principles of Direct Instruction (DI) into actionable steps for all teachers. It is such a great episode, with some very powerful messaging around the crucial role of the teacher in conveying and breaking down information so that all students can … Continue reading S4E17: Kris Boulton on Atomization, DI Principles, and Unstoppable Learning
S4E13: Catherine Thevenot on Counting on Your Fingers
Should students be taught to count on their fingers? Today I am excited to bring you an interview with Catherine Thevenot. Catherine is a researcher at the Institute of Psychology at the University of Lausanne in Switzerland. Her work focuses on cognitive development, particularly in the area of numerical cognition and arithmetic skills in children. … Continue reading S4E13: Catherine Thevenot on Counting on Your Fingers
S4E12: Jan Hasbrouck on Reading Fluency and Direct Instruction
Welcome back to Progressively Incorrect. My name is Dr. Zach Groshell, and today I am excited to bring you an interview with Jan Hasbrouck, the keynote speaker at NIFDI’s 2025 National Direct Instruction Conference and Institutes. Dr. Hasbrouck is a renowned researcher and author with a distinguished career dedicated to improving literacy and educational outcomes. Dr. … Continue reading S4E12: Jan Hasbrouck on Reading Fluency and Direct Instruction


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