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Assessment GCSE
Year 9 Year 10 Year 11
3.1 Algorithms
Effective Notetaking Understanding Algorithms Decomposition Abstraction Flowcharts Flowcharts 2 Trace Tables Searching Algorithms Bubble Sort Merge Sort
3.2 Programming
Imperative Languages Variables Data Types Input/Output Arithmetic Operators Comparison Operators Using Selection For - loops While - loops Data Structures String Manipulation Random Numbers File Operations Procedures Program Structure Data Validation Data Authentication Errors and testing high and low level languages
3.3 Data representation
3.3.1 - Number Bases 3.3.2 - Converting Number Bases 1 3.3.4 - Binary Arithmetic 3.3.2 - Converting Number Bases 2 3.3.3 - Units of Information 3.3.5 - Character Encoding 3.3.6 - Representing images 3.3.7 - Representing Sound 3.3.8 - Data Compression 3.3.8 - Huffman Coding
3.4 Computer Systems
Boolean Logic Operating systems Utility Software Computer Architecture CPU Types of Memory Storage Media
3.5 Computer Networks
Networks Overview Network Topologies Network Hardware Network Protocols Network Security Network Layers

Overview

Learning Objectives

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ID	Skill_name
3.1.1.6	I can explain simple algorithms in terms of their inputs, processing and outputs.
3.1.1.5	I can represent simple algorithms using flowcharts or pseudo-code
3.1.1.4	I can represent algorithms using flowcharts, pseudo-code and use them to create program code

🏁 Learning Objective Creating Algorithms

Lesson Video

Lesson Tasks

Watch the Lesson video
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Complete the learning activities
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Creating Algorithms - Learning Activities

Flowcharts symbols

Input output

Selection

Iteration

Task: Flowchart creator

Use the flowchart creator program (click on the button below) to copy the flowchart below.

Flow Chart Creator

Can you work out what the flowchart does?

Task: Times Table

Complete the flowchart below using flowchart creator to ask the end-user to enter a number. The program will then display the full times table, from 1 to 10, for this number.

Task: Login

Complete the flowchart below using flowchart creator for a user login. A login form should ask the user to enter their username and password. It will then check if these login details are correct before displaying either a welcome message or an error message.

Pseudocode

Most programs are developed using programming languages. These languages have specific syntax that must be used so that the program will run properly. Pseudocode is not a programming language, it is a simple way of describing a set of instructions that does not have to use specific syntax. Common pseudocode notation

There is no strict set of standard notations for pseudocode, but some of the most widely recognised are:

INPUT - indicates a user will be inputting something

OUTPUT - indicates that an output will appear on the screen

WHILE - a loop (iteration that has a condition at the beginning)

FOR - a counting loop (iteration)

REPEAT - UNTIL - a loop (iteration) that has a condition at the end

IF - THEN - ELSE - a decision (selection) in which a choice is made

--> any instructions that occur inside a selection or iteration are usually indented

Click on the button below for information on AQA pseudo code

AQA PSEUDO CODE DOC

Task: Pseudocode

Now lest take all of our flowchart algorithms and turn them into pseudocode

Learning Outcomes

I can represent algorithms using flowcharts.
I can represent algorithms using flowcharts
and pseudocode
I can represent algorithms using flowcharts
and pseudocode and create my own algorithms using
one or the other or both.