In this unit children learn how to use input devices or switches to control a process. They learn that it is possible to attach devices such as pressure pads, light sensors, magnetic switches, on/off switches or other devices to a control box. The computer can then be programmed to carry out a process when it detects some sort of change, eg switch on the light when it gets dark. They learn the new control language necessary to program the control box to make such decisions, eg 'if... then...'
Where this unit fits in
This unit assumes children: - know about procedures
- can program output devices
Technical vocabulary
- If...
- then...
- until
- control box
- output devices, such as bulbs, small motors and buzzers
- input devices, such as pressure pads and light sensors
Sounds
Video
Software suitable to use:
Online Resources-for Teachers:
BATH GAME DATA HANDLING (mathsonline) http://www.mathsonline.co.uk/nonmembers/gamesroom/sims/archi/data.html
Online Resources- for Pupils:
Objectives
key idea: that computers can monitor physical factors
key idea: that a switch can cause an event to occur
technique: to use 'If ...then...' and 'repeat forever'
key idea: that a light sensor can monitor light and dark and trigger an event
technique: to use a light sensor
key idea: that more than one input device can be used
technique: to use and program two input sockets
- To develop a system that controls events in response to conditions
most children will: produce simple procedures to turn on lights and sound alarms; need help with their program and will need to make amendments
some children will not have made so much progress and will: have difficulty producing procedures; need help to get the logic correct; need to correct work frequently
some children will have progressed further and will: produce procedures without difficulty; string procedures together; recognise patterns in programming; recognise the weaknesses of the system
Assessments
2Simple 2AssessActivitiesProximity Light,
Automatic Fan,
Automatic Lights,
Automatic Heater.
