Community teacher
Computer Science teacher
- 4 resources shared
- Verified teacher
- CC BY-SA 4.0
Shared resources
Open any one to read it in full. Copying into your own lessons needs a Coding Pathway account.
CAIE P1 S1 Hexadecimal numbers
This worksheet gives pupils practice converting between binary and hexadecimal in both directions. It also asks them to explain why hexadecimal is useful as a human readable shorthand for binary, so it builds understanding as well as calculation skills. The work is straightforward to moderate, with some short explanation questions and careful attention needed for nibble boundaries and leading zeroes.
WorksheetCAIE P1 S1 Binary addition and overflow
Pupils practise adding positive 8 bit binary numbers from right to left, tracking carries and deciding when a result overflows the available width. The worksheet also asks for explanations of overflow in context, so it is a focused but fairly demanding bit of binary arithmetic and reasoning.
WorksheetCAIE P1 S1 Signed integers and two's complement
This worksheet introduces 8 bit two's complement and asks pupils to decide when signed or unsigned integers are suitable, interpret negative binary patterns, and convert denary values to and from signed binary. It teaches the 8 bit ranges and the invert and add one method, with short explanations, checked examples, and error spotting tasks. The demand is moderate, with strong scaffolding for learners who are new to signed binary.
WorksheetCAIE P1 S1 Binary foundations
This worksheet introduces the foundations of binary number representation. Pupils learn why computers use binary, how 8 bit place values work, how to convert simple binary patterns to denary, and how bit width affects the number of values and the maximum value. It is fairly accessible and suits a guided first look, with some short challenge questions for stretch.