# OCR A Level Computer Science H446 – Binary Search Algorithm Interactive Visualiser + Worksheet

OCR A Level Computer Science H446 – Binary Search Algorithm Interactive Visualiser + Worksheet

Make the Binary Search algorithm easier to understand with this step-by-step interactive visualiser.

Designed for OCR A Level Computer Science H446 – Topic 2.3.1: Algorithms, this resource helps students understand how binary search efficiently locates an item within an ordered list.

What can students explore?

Students can step through the binary search process, track low, middle and high indices, and observe how the search range becomes smaller after each comparison.

They can also investigate searches where an item is not present and explain why the algorithm requires sorted data.

What’s included?

• Interactive offline Binary Search HTML simulator
• Student activity worksheet (PDF)
• Teacher guide with lesson suggestions (PDF)
• Teacher answers and assessment guidance (PDF)
• Instructions and customisable licence template

Why use this resource?

An excellent visual aid for introducing binary search, helping students trace algorithms and preparing them for exam-style algorithm questions.

Suitable for classroom demonstrations, independent learning, retrieval practice and revision.

No programming knowledge or installation required to use the simulator. Simply open the HTML file in a modern web browser.

Independently developed teaching resource. Not endorsed by OCR.