This is a 34 page Smartboard file teaching Geometric Series. The lesson starts with definitions and formulas. Students learn to find the sum of a series. For example find the sum of the first 8 numbers. They can see the first few numbers. From there they have to come up with the common ratio. The lesson proceeds to where they are given the sum and the common ratio and have to identify the first number in the series. I even through in a fraction or two. Plenty of example await including the answers.