The best way to overcome a cross road is to find something that will lead us the way. An engineer look into his blue print to make sure that the building is balance, a teacher review his lesson plan to make sure his information is right, technician make sure that the circuit i correct when he looks into his diagram, and compass helps direct an adventurer to where he should go. A handy tools makes our lives easier, isn't it? A student most often try to learn from the book either it's a text book or activity book and they believe in what it say. They follow instructions and analyzes the information. All of us is like a students looking for new things to learn, we all look for an answer, we all start learning with the content given by the book, an experience we got from this powerful tool, the value of the information that we gain depends on how we use it.