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consists of 4th and 5th grades math problems that students analyze. By examining worked examples, they are able to dislodge stubborn misconceptions.

Poster Problems

consist of 12 two-day lessons taught in six instructional phases to support diagnostic teaching in mathematics. Lessons are centered around engaging problem contexts that highlight critical mathematics concepts targeted by the Common Core State Standards.


is a set of Algebra 1 assignments that incorporate worked examples and prompt students to analyze and explain.

The 5x8 Card

is an observation tool designed to focus school principals on “Student Vital Actions” associated with the Common Core’s Standards for Mathematical Practice.

Tools for Sense-making in Mathematics

was developed to shift the culture of mathematics classrooms away from answer-getting and toward sense-making. These tools help teachers guide their students through solving word problems.

Strategic Education Research Partnership

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Open Educational Resources