Overview

Students learn about the RGB color encoding scheme and use an updated version of the pixelation widget to encode color images. Hexadecimal notation is useful for representing larger groupings of binary digits.

Vocab

• Hexadecimal - A base-16 number system that uses sixteen distinct symbols 0-9 and A-F to represent numbers from 0 to 15.
• Pixel - short for "picture element", the fundamental unit of a digital image, typically a tiny square or dot that contains a single point of color of a larger image.
• RGB - the RGB color model uses varying intensities of (R)ed, (G)reen, and (B)lue light are added together in to reproduce a broad array of colors.

Resources

• A Little Bit about Pixels - Video (download)

• Worksheet - Video Guide for "A Little Bit about Pixels" (optional) - Worksheet (copy as MS Word, Google Doc)

• Encoding Color Images - Activity Guide (copy as MS Word, Google Doc)

• Hexadecimal Numbers (optional) - Activity Guide (copy as MS Word, Google Doc)

• Personal Favicon Project - Activity Guide (copy as MS Word, Google Doc)

• Rubric - Personal Favicon Project - Rubric (copy as MS Word, Google Doc)