## Teach Computing

Revision notes, activities, lesson plans, teaching ideas, and other resources for GCSE, A-Level, and IB Computer Science teachers and students.

## What's New

### Boolean logic worksheet pack

These three Boolean logic worksheets have exam style questions on logic sta...

### Edexcel Computer Science (9-1)

by Ann Weidmann et al
Amazon.com | Amazon.co.uk | Book Depository
This bo...

### Dijkstra's algorithm video

This video is probably the best explanation of Dijkstra's algorithm for IB ...

### Input-Process-Output (IPO) Model

The Input-Process-Output model is a simple topic but some students sometime...

### Hexadecimal

A comprehensive review of hexadecimal. The video covers not only how to u...

### Subprograms, Local Variables & Structured Programming

Subprograms are known by several different names - methods, functions, proc...

### Utility Software and Models

Some students find the difference between operating system software and ut...

### Data Structures

This video explains different types of data structures - 1 dimensional ar...

### Operating System (OS) - GCSE Computer Science

A detailed overview of operating systems, starting with the general tasks t...

Click here for recommended AQA A-Level Computer Science textbooks.
Logic Lab is a free online logic circuit simulator featuring many input and output devices, and even a propeller!

*Updated: 2015-04-06*

### Logic gates: AND, OR, NOT

A revision video from Computerphile which covers the three basic logic gates: AND, OR, and NOT. The video includes truth tables, logic gate symbols, and the different notations that are used to denote 'AND' and 'OR'.

*Updated: 2015-04-19*

This video starts by recapping the truth table for an exclusive-OR (XOR) gate, and then goes on to show how its properties can be used to help create a half-adder in conjunction with an AND gate. The video helps demystify the concept by building up the half-adder and explaining with examples why an additional gate is needed.

*Updated: 2015-04-29*

### Boolean logic worksheet pack

These three

Boolean logic worksheets have exam style questions on logic statements and truth tables. There are 22 questions in total, covering AND, OR, and NOT gates. Answer sheets included.

*Updated: 2018-05-17*