GIF files are the standard lossless compression format. They are designed for flat images and work well for text and illustrations. This compression type works best for images with limited distinct colors, typically fewer than 256. It is the file choice for line drawings, simple cartoons, and computer generated images. The GIF file type has improved Web page interface design by allowing for sleek graphically designed pages that are quick to download. GIF stands for Graphic Interchange Format.
Grade 4 provides a variety of engaging, hands-on experiences that build understanding of science content. Each lesson is supported by a wealth of vibrant visuals designed to motivate students.