Independent International Course

Secondary Computer Science

Structured lessons, programming activities and interactive practice for students studying secondary-level Computer Science.

These independently created learning resources are not affiliated with, endorsed by or official materials of any examination board.

1.1 Digital Patterns and Number Codes ▶

1.1.1 Two States, Many Patterns 1.1.2 Reading and Building Binary Values 1.1.3 Hexadecimal: A Compact View of Binary

1.2.1 Character Codes and Multilingual Text 1.2.2 Pixels, Colour and Image Quality 1.2.3 Sampling Sound Waves

1.3.1 Binary Addition and Overflow 1.3.2 Logical Shifts and Bit Loss 1.3.3 Signed Values with Two’s Complement

1.4.1 How Computers Measure Storage 1.4.3 Reducing Files Without Losing Their Purpose