LESSON 5 Module 4: Working with Images Image File Types

In this lesson, we will: Use the Internet to produce a definition for three graphic file types most often used on the Internet. GIF JPEG PNG Work in cooperative teams and teach the rest of the class about your assigned graphic type Lesson 5 Overview

Guiding Questions In Web design, images are saved as different file types. What are they? When should the designer choose one over the other? Use the guiding questions as a class starter, allowing the students time to answer the questions in their journal. Discuss student answers to the questions.

Web sites Graphic file types: http://www.webstyleguide.com/graphics/formats.html Image file types and how to choose: http://www.wfu.edu/~matthews/misc/graphics/formats/formats.html All image files: http://www.fileinfo.net/filetypes/image Use Web sites to give background information and show examples.

Exploring image file types Research an image file type Create a mini-lesson Present the mini-lesson to the class Complete the Image File Type worksheet Students are assigned a working group and an image file type. Students will research using the Internet and the Image File Type sheet. After they find the pertinent information about their file type, they will create a mini-lesson utilizing PowerPoint, Word, Inspiration, or another appropriate program. Students then present their mini-lesson to the class. The audience participates in the mini-lessons presented by peers, and finishes the Image File Type from the information gathered.

Lesson Review JPEG: A graphic file type that is used primarily for photographs and has lossy compression. GIF: A graphic file type that is used primarily for line art and simple animations. PNG: A graphic file type that is used for static images with lossless compression. Summary and vocabulary

Assessment Why is it critical to know what file type you are working with or want to save as? If you were creating an animation for a Web page, what file type would you save the image as? What is the significance of a PNG file type, and when would you use it? What file type is commonly used in the photography world, and why? Ask students to answer the questions in their journal, with a partner, or as a whole class.