This 26-slide PowerPoint presentation serves as an introduction to negative numbers. It begins with a simulation about sea level and leads into real-world examples of negative numbers that include temperature, golf scoring, and personal budget surplus/deficit. Also covered are opposites and defining a zero point. This presentation can be covered in under 30 minutes. Use it for a full class lesson or for individuals who need to gain more understanding or missed the lesson. The content is based on the Common Core standard CCSS.Math.Content.6.NS.C.5 under the domain The Number System.