This activity is to be used as a discovery-based introduction to similar triangle theorems. Students will each be assigned a number 1, 2, or 3 (I use cards for this or counting off). They will get into groups by number and work on their station number. Students will follow a set of directions that have them construct a similar triangle either using two angles, a side-angle-side, or three sides. This will help students conceptualize why similar triangles are created from just 2 or 3 measurements and that not all angles and sides are needed to do this. Once done in their groups, students "Jigsaw" into new groups mixed of a 1, a 2, and a 3. In these new groups, students share their discoveries from their previous groups and come up with a definition for AA, SAS, and SSS. A student recording page is also provided. Word document for editing.