Simple
switch devices are often used to introduce people to the use of switches.
Observation of a child using a switch with a toy (with a battery adaptor)
can be sufficient to establish whether or not they have an understanding
of cause and effect; that is they are aware that their pressing the
switch is actually causing the device to operate.
For
some users this may have to be done by allowing them to make switch
presses and to gradually establish a connection between this and their
switch presses.
However,
even the simplest switch toys can be put to more use by involving
the users' in games based on their use of the switch. This can provide
opportunities to refine their switch operation by developing more
control.
Adaptor
for AA or AAA batteries
Adaptor for C or D batteries