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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