A short activity for students to spot the physical security issues in the picture. This can be used as a starter, or to generate class discussions. The preview shows one image from the main picture.

A CPU architecture activity, based on OCR specification.   Includes: Control Unit 4 registers ALU Cache   Activity includes: Cut out and glue on the component parts of the CPU. Fill in the missing keywords from the word table Colour in the CPU   Suitable starter activity or revision resource.

This activity is a crossword puzzle. Each clue is encrypted with a Cesar cipher using a different shift. The answers in the puzzle are in plain text. A selection of the words includes: Encryption Key Cypher Enigma Included in the download: Word document of the puzzle (so it can be used on electronic learning platforms) PDF version Answer sheet with the solved puzzle The plain text clues The encrypted clues with the shift number

A useful starter or revision resource.

A3 grid paper to support students writing code by hand.