# Unit Overview: Representations: from clay to silicon

## Lessons:

6 lessons

### Across time and space

In this lesson, we will investigate the use of symbols to represent information (just like computers do) and relate this to human practice for centuries. We will prepare for exploring binary representations in the context of computing.

• 1 Quiz
• 14m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Lights and drums

In this lesson, we will learn how to encode, transmit, and decode short messages using a variety of coding schemes and communication medium (signals, light, sounds, holes in paper, etc.). We will understand that text representation uses sequences of symbols.

• 1 Quiz
• 19m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Binary Digits

In this lesson, we will grasp what binary digits are by associating them with familiar sets of symbols such as letters and decimal digits. We will solve simple problems that reinforce the connection between (alphanumeric) information and its binary representation.

• 1 Quiz
• 24m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Numbers in Binary

In this lesson, we will build upon using a decimal numbering system, in order to draw analogies with how numbers can be represented using binary. We will convert between binary and decimal.

• 1 Quiz
• 23m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Large Quantities

In this lesson, we will explore the prefixes used for measuring size, such as 'kilo-', 'mega-', 'giga-', and 'tera-'. We will revisit digital computing devices using binary digits to represent all information (including programs).

• 1 Quiz
• 21m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Turing's mug

In this lesson, we will complete a set of tasks followed by a puzzle activity that utilises conversion between binary and decimal.

• 1 Quiz
• 14m Video
• Presentation(PPT)
• Worksheet
• Transcript