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ZigZag Education Educational resources for schools and colleges
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'Technical Topics' Presentations and Worksheets for OCR AS & A Level Computer Science

Animated presentations and follow-up worksheets designed to reinforce the mathematical and logical concepts of the OCR 2015 specification.

An invaluable resource which enables all students to grasp the fundamentals of programming, algorithms, computation and data representation.

For each topic:

  • Animated presentation providing a step-by-step walkthrough, in the following formats:
    ➊ PowerPoint – ideal for teacher-led classroom learning
    ➋ HTML5 ‐ compatible with smartphones/tablets
    ➌ PDF – perfect for printed handouts
  • Supporting worksheet, offering students the opportunity to apply it for themselves

  • Use in class or as homeworks; to support your teaching or for revision
  • Easy answers for self/peer or teacher marking

Topic List (AS & A Level)

  1. Data Compression *
  2. Encryption *
  3. Relational Databases
  4. Structured Query Language *
  5. Normalisation *
  6. Binary & Hexadecimal
  7. Binary Arithmetic
  8. Negative Numbers
  9. Fractions
  1. Arrays
  2. Stacks & Queues
  3. Linked Lists & Hash Tables *
  4. Graphs & Trees *
  5. Logic Gates
  6. Boolean Algebra
  7. Sequence & Selection
  8. Iteration
  9. Subroutines
  1. Recursion *
  2. Assembly Language
  3. Graph and Tree Traversal *
  4. Searching Algorithms *
  5. Sorting Algorithms *
  6. Shortest Path Algorithm *
  7. PageRank Algorithm *
  8. Big-O Notation *

* indicates A Level only

Also available: AS-only version for centres not delivering the full A Level