U2/Ch1/L4:  Encoding Color Images

Purpose: Students will understanding the relationship between hexadecmial (base-16) and binary (base-2),
Vocabulary: Hexadecimal, Pixel, RGB

Journal: Encoding Color?

• Show the students the B&W image they encoded during the previous class.
• Ask: (with Partner) Devise an encoding scheme for color.
• How many colors could you represent? Share.
• What are some of the difficulties you face?

Video: A Little Bit about Pixels - Video
Handout: A Little Bit About Pixels

Activity 1: Color Pixelation  Widget
Handout: Encoding Color Images - Activity Guide.
#1-Video Tutorial: Color Pixelation Widget  - (3 bit color)
#2-Video Tutorial: Color Pixelation Widget  - (6 bit color)
#3-Video Tutorial: Color Pixelation Widget  - (12 bit color)

Handout: Hexadecimal Numbers - Activity Guide. (Optional)

Activity 2: Personal Favicon
Handout: Personal Favicon - Activity Guide.