In this chapter, you learned about the practical application of the line-following technique and its use in industry. You wrote your own two-state line-following program and executed the same to solve various tasks. You also applied your construction skills in the challenge section to solve the challenge given. You will be able to build such humanoid robots on your own using LEGO elements on any other platform, such as EV3 and WeDo. In the next chapter, you will be building a robot with wheels and a color sensor on it that will be landing on the moon's surface for exploration purposes. You will be performing logical activities to identify the types of minerals present on the surface of the moon and grab some of these minerals.