“Transforming Instruction of Geometry—Emphasizing Reasoning and Proof (TIGER-AP) Community of Practice for Secondary Geometry Teachers” was facilitated by Orly Buchbinder and Ruthmae Sears on November 11, 2025. Let’s keep the discussion about their presentation going here on the blog!

Short Description:
This presentation will focus on the TIGER-AP – the online Community of Practice (CoP) of secondary (Grades 6-12) geometry teachers from New Hampshire and Florida. TIGER-AP occurred between January and April 2025, in which about 20 teachers met once a month for two hours. The CoP encouraged geometry teachers to strengthen their technological pedagogical content knowledge, share instructional strategies and experiences, integrate technological tools during instruction (such as FullProof.io), work collaboratively, and support students’ abilities to construct proofs and demonstrate proficiency in geometrical reasoning.