In the computer science curriculum for 2nd grade by , a key feature is identifying the System Unit as the main part of the computer .

For more structured practice, you can find Worksheets and Tests on Infourok or review the Interactive Workbook at Ozon to see how these concepts are visually presented to students.

: The Processor is often referred to as the "brain," located inside the system unit to perform calculations.

: The Keyboard (text entry) and Mouse (on-screen movement).