This activity can be used with Slope Activities 1 and 2. Students are given geometry tiles (regular polygons) made of plastic in the shapes of squares, rhombus, equilateral triangle, hexagon, etc. Each student builds a row of the shapes, recording the perimeter with each additional polygon. 1 unit is assumed to be the length of each side. Patterns will emerge, so that students can readily predict the next total perimeter. This example can be used to help students build an understanding of growth, patterns, and "slope", but it doesn't work well to explain a y-intercept! It is great for problem solving, and can be used as an extension if asking how many people can be seated at a table of that shape!