This kit contains all the accessories you need to prepare for electronic beginners' project. It is the best choice as a Christmas Gift, Back to school Gift and Birthday Gift Easy to learn: Comes with 15 project tutorial cards, it will help you to build the electronic circuits quickly Helpful for teaching: Detailed Beginner Kit Tutorial & Sample Code Document was provided by DFRobot, it will help the teacher/parents to teach easily (Download sample code package in tutorial.pdf) Learn it anytime: There is a Mobile Application for this kit to find these detailed tutorials and sample code. (Support Android 4.0.3 and above only, download in Google play) Easy to use: Each of the small pieces has an individual plastic bag so that components can be easily kept organized. Well clearly labeled on them. Note: Please download the PDF tutorial on this page (