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Drew Lewis
@drew-lewis.com

This one (by @rungryhippo.bsky.social @scgriffith.bsky.social and others) is a deep dive into our section on row reduction. You can read the activities here: library.tbil.org/2026/linear-...

library.tbil.orgTBIL-LA Row Reduction of Matrices (LE2)
PRIMUS@readprimus.bsky.social

"Promoting Students' Sense-Making in Row Reducing Matrices: A Lesson Analysis Manuscript" by Kostiuk, Lewis, Borges, Brandt, Chang-Lee, Creech, Griffith & Hashimoto about motivating the power of RREF. www.tandfonline.com/doi/full/10....

tandfonline.comPromoting Students' Sense-Making in Row Reducing Matrices: A Lesson Analysis ManuscriptIn this lesson analysis, the topic of the lesson is using operations to calculate the Reduced Row Echelon Form of a matrix. The course context is an introductory linear algebra course taught using ...
Drew Lewis
@drew-lewis.com

This one examines a set of TBIL activities helping students choose amongst differentiation strategies

PRIMUS@readprimus.bsky.social

"Developing differentiation strategies by learning to parse symbolic expressions: A lesson analysis manuscript" by Noble, DeGeorge & Pinzon about a conceptual understanding of functions, especially composition of functions. www.tandfonline.com/doi/full/10....

tandfonline.comDeveloping differentiation strategies by learning to parse symbolic expressions: A lesson analysis manuscriptIn this lesson analysis, the topic of the lesson is a module on choosing an appropriate differentiation strategy. The course context is a lesson used at two public, 4-year, open-admissions institut...