With the mini-grant we purchased a new 3-D printer. This was awesome because it allowed us to build on a lesson we had done earlier in the year. We have been working with measurement and scale. The students were given a real life situation in which they had to design a greenhouse that was at least 10X20’ in dimension. We started the project by sketching the blueprints on graph paper. Then we built a virtual copy of the model in a CAD program called SketchUp. Then the students had to use their knowledge of scale to make a building 1/10th of the actual size of the building. The CAD program was great because we could use our saved CAD files with the 3-D printer and construct our scaled-down model in real-life. This helped students understand proportionality and gave them hands-on experience with engineering.