MUSICAL FAMILIES
The musical families are the group of instruments that make the sound in the same way.
STRING FAMILY / SECTION
String instruments like the violin or the double bass make a sound when their strings vibrate as we play them.
PERCUSSION FAMILY / SECTION
Percussion instruments like the drum or the castanets make a sound when we bang, scratch or shake them.
WIND FAMILY/SECTION
Wind instruments like the saxophone or the flute have one or more tubes inside them.
When we blow into the tubes, the air in the tubes vibrates and produces a sound.
Woodwind instruments introduced by the Wells Orchestra.
Brasswind instruments
In case you want to go further ,this site could be of your interest.
http://kidspicturedictionary.com/english-through-pictures/things-english-through-pictures/musical-instruments-
http://www.musicfun.net.au/pdf_files/instruments.pdf