OCR J277 Computer Science 2.1 Searching Algorithms

OCR J277 GCSE Computer Science 2.1.3 lesson: linear and binary search with animations and Exam Reference Language trace tasks. 22 slides with answers.

A complete, ready-to-teach lesson for OCR GCSE Computer Science (J277) 2.1.3: the main steps of linear and binary search, their pre-requisites, applying them to data, and identifying them from code.

What’s included (22 editable slides)

• Learning objectives and a retrieval Do Now with answers
• Animated linear search demonstration, plus the steps of the algorithm
• Fill-in-the-blanks consolidation with answers
• Linear search in OCR Exam Reference Language, with a trace task and full trace table answer
• Animated binary search demonstration, with every midpoint calculated using DIV
• Binary search steps and fill-in-the-blanks with answers
• Binary search in OCR Exam Reference Language, with a trace task and full trace table answer
• Comparison table of benefits and drawbacks
• Extended writing task with a model answer
• Exam-style questions with a mark scheme

Teacher notes on every slide, including a card-flip demonstration, misconceptions and teaching suggestions.

This is lesson 5 of 6 in the OCR J277 2.1 Algorithms unit, also available as a complete bundle with booklets, homework and assessments.