This MECHANIX set has instructions to build 14 models with more than 150 parts. The best part about it is that it starts with simple models that gradually increase in complexity as the skill of the builder grows. This along with the number of versatile parts (including gears) makes it a great set for beginners and advanced builders alike. This modern MECHANIX set is the perfect introduction of engineering to children. The models and parts are designed to making the building process easy and a great way to encourage a child into the new experience of creation. , , The manual provided can help you build any of the models mentioned in the set. Just remember these few points in your build: , 1. Follow the steps mentioned in the manual and watch out for the notes mentioned. , 2. Always remove the parts required in the step aside. After completing the step, noticing if any parts are left is a good way to recheck before moving on.