AG Didaktische Innovation für Geometrie (ADI GEOMETRIE) is an Austrian non-profit association dedicated to advancing the teaching of spatial geometry and related subjects, including technical drawing, descriptive geometry and CAD. Founded in 1997 by specialists from schools, teacher-training institutions and universities, the group developed practical resources and initiatives to support modern geometry education. Although it ended its work as the didactics group of the Austrian Geometry Association in 2017, it continues independently and maintains existing projects.

A central offering is RIF 3.0, a free, interactive learning platform that helps students and teachers develop spatial reasoning. It provides tasks in German, English, Spanish and Portuguese, with classroom features such as class and individual results, performance profiles, and animated activities. The association also supplies supplementary exercise collections linked to the Expedition Mathematik schoolbooks for lower secondary students. Its earlier resources include multimedia teaching materials, CDs, printed topic collections, course content and examples for school and university study.