Hello and welcome to the course "Introduction to fractals and scaling" I'm Dave Feldman, professor in physics and mathematics at college of the Atlantic in Bar harbor, Maine Thanks for signing up for the course and thanks for stopping by to check it out In this introductory video I want to say a little bit about some of the goals for the course and then go over some important logistical information The goals for the course are for you to gain a grounded modern introduction to the subjects of fractals and scaling This means learning what a fractal is and learning about different types of dimensions and what they mean and how they are used to characterize fractals We'll also explore the connection between fractals and power laws, talk about what power laws mean, also what it means to say that something exhibit scaling We will conclude the course by looking at some relatively recent applications of this idea of scaling to first metabolic systems, then to urban systems The math background for the course is as follows; I'll use a little bit of algebra, not much, but there are a few topics, exponents and logarithms that I will use a lot. If you're not familiar with these, don't worry, in this unit there's an optional review for people that want to brush up on these topics If you're worried about your math background I would say: Don't worry about it, give it a shot! I'll review difficult topics as they come up It will always be possible to get help in the discussion forums for the course Next; a few logistical items; First, if you haven't taken a course with us before I'd suggest checking out the video; "How to use Complexity explorer" You can find this video on the right on the main page for the course It's one of the blue bars on the upper right This short video tells you about the site in general and how our complexity explorer courses work so you might want to check that out Second, a reminder to check out and post in the course forum if you like This is a great place to ask questions and to engage in discussions with some of the other students who are in the class Also, if you notice that something isn't working,,broken links or there's a type-o or something seams wrong be sure to let us know Posting in the forum is usually the best way to do that you could also contact us on twitter This is the first time we're doing the course There are bound to be a few type-os and glitches along the way I'm counting on you to help point them out so we can correct them really quickly Lastly a note about the course scedule There are 7 or 8 units in this course My plan is to release a new unit every monday That schedule might shift a little bit but that's my plan for now I'll be posting frequent updates on the course forum and also via Twitter About once a week I'll post larger updates to the class via e-mail You can stay in touch in a number of different ways Again, Welcome to the course Thanks of stopping by I'm glad you joined us Let's get started!