These activities were developed by Tammy Pirmann for CS Principles.
For sample versions, click here. For full access, contact Clif Kussmaul.

Stage	Activity Name
3: Refined	Hardware Abstraction 1: What is a Computer?
3: Refined	Hardware Abstraction 2: Logic Gates
3: Refined	Number Systems 1: Decimal and Hex
3: Refined	Number Systems 2: Binary