Computer Science LearnITWithMrC ⛯ Year 7 Year 8 Year 9 GCSE
ICT
Responsive image

Lesson 1 - Solving problems with flowcharts

Flowcharts and sequencing

Software can be used to create sequences in a flowchart, to view onscreen simulations.

Examples include:
  • Flowol
  • Logicator
  • Crocodile Clips

Basic flowchart symbols

Name Symbol Usage
Terminator

Starts or stops a process.

Input or output

An input is data received by a computer. An output is a signal or data sent from a computer.

Process

An instruction or a command.

Decision

A decision, either yes or no. For example, a decision based on temperature that turns a central heating system on or off.

Line tool

Connects the symbols. The arrow indicates direction.



Flowcharts and sequencing

Software can be used to create sequences in a flowchart, to view onscreen simulations.

Examples include:
  • Flowol
  • Logicator
  • Crocodile Clips

Basic flowchart symbols

Name Symbol Usage
Terminator

Starts or stops a process.

Input or output

An input is data received by a computer. An output is a signal or data sent from a computer.

Process

An instruction or a command.

Decision

A decision, either yes or no. For example, a decision based on temperature that turns a central heating system on or off.

Line tool

Connects the symbols. The arrow indicates direction.



control

Control and sequencing

There are several aspects of control but all of them involve controlling computers and creating sequences of instructions for the computer to follow

Control technology is used to:

  • operate systems, eg traffic lights
  • control actions, eg a robot's movement
  • create video games
  • control manufacturing devices, eg laser cutters

Computers follow instructions or sequences programmed into them. A flowchart can be used to help design a sequence. Actions can be ordered, reordered or removed if no longer necessary.

Task 1 - Zebra Crossing

Read the instructions in the worksheet below and then complete it by downloading a copy to your computer.


Task 2 - Control Devices

Complete the Doddle assignemnt for control devices

  1. Click on the image below to log in to Doddle.
  2. Find the assignment 'Control 1'.
  3. Open it and work through the tasks.

Task 3 - Creating a Zebra Crossing using Flowol


Getting to know Flowol

Read through the slides below and follow the instructions to create a Zebra crossing flow diagram using Flowol.


Zebra Crossing Video help

Click on the button below if you want to watch a video to help you.

×

Flowol - Zebra Crossing

Flowol


Update your objectives

control

You should now be able to assess yourself against your objectives:

  1. Identify flowchart symbols and understand how they are used to describe systems
  2. Break down problems and processes into distinct steps.
  3. Develop a control flowchart solution for a simple problem


  • Learning Objectives

  • I can Identify flowchart symbols and understand how they are used to describe systems.
  • I can break down problems and processes into distinct steps.
  • I can develop a control flowchart solution for a simple problem.

Flowcharts and sequencing

Software can be used to create sequences in a flowchart, to view onscreen simulations.

Examples include:
  • Flowol
  • Logicator
  • Crocodile Clips

Basic flowchart symbols

Name Symbol Usage
Terminator

Starts or stops a process.

Input or output

An input is data received by a computer. An output is a signal or data sent from a computer.

Process

An instruction or a command.

Decision

A decision, either yes or no. For example, a decision based on temperature that turns a central heating system on or off.

Line tool

Connects the symbols. The arrow indicates direction.