http://pickinpost.net/Education/education.php PowerPoint presentation sample from an Earth Science packet that contains 48 successfully proven in the classroom presentations that cover all areas of Earth Science from middle school to college. A full description of the content that all 48 presentations cover can be found by going to my website and reading the short summary. If you would like to purchase please click on the MAKE OFFER button that will allow you send me an email in your interest. I will respond with how you can easily own these presentations and start using them in the classroom. Thank you for watching!