Hi... Ita Septiyani
the school because accessed easily please see the pattern of sentence
Children can use IT to access every ...
While more active and efficient.(see panctuation) The other examples are auto cad, ...
children who using computer or (...), it are more smart ...
There are many informations = this is uncountable noun can use to support ...
The contents usually is are more
The subjects such as physics, (...) can download (it will be better to use passive voice to suit with your meaning) in the computer or tablet.
It is because of more effective and efficient.
hope this helps,
keep cheers,
Moh. Jawahir