Ongoing Assessment Project for Additive Reasoning (OGAP)

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Graduate Credits: 
Offered by: 
Professional DevelopmentMath


The Ongoing Assessment Project (OGAP) for Additive Reasoning is a systematic and intentional formative assessment system in mathematics based on mathematics education research on how students learn additive concepts, common errors students make, and preconceptions or misconceptions that may interfere with learning new concepts or solving related problems.

The system involves using the OGAP Additive Framework/Learning progression and other OGAP processes, together with knowledge related to the teaching and learning of additive concepts and skills to implement a continuous and intentional system of instruction, probing with instructionally embedded questions and analysis of evidence in student work to make timely instructional modifications.

Evidence from OGAP work with hundreds of OGAP teachers has shown that utilizing the knowledge from the professional development is best solidified as teachers use this knowledge with students and that seems to happen best when teachers are supported on an ongoing basis through a system like PLCs. OGAP Additive Reasoning professional development consists of 3 full days and a number of follow up sessions organized around mathematics content, mathematics education research, and evidence in student work and instructional decision-making using formative assessment and learning progressions. Throughout the training, participants will learn how to use the OGAP Additive Framework and OGAP Additive Item Bank with their students to enhance the use of their current program materials and the CCSSM. Participants will be asked to bring student work from their classrooms/schools to on the later days of the training.

Audience and Grade Level

Classroom teachers, interventionists and special educators; K -3.


Optional 3 graduate credits, additional $390.


Future training dates will be announced here. If you have questions or are interested in offering this training on-site, please contact us.