Wait until the noise subsides, and then begin class.
EARLY ATTEMPTS

say "HELLO"
"MAR-GARET"
"HEL-LO MAR-GARET"
"ME-ME-ME-ME"
"1 - 2 - 3 - 4 - 5"

AFTER SOME PRACTICE

"1 - 2 - 3"
"1 - 2 - 3 - 4"
"1 - 2 - 3 - 4 - 5"
"1 - 2 - 3 - 4 - 5 - 6 - 7"
"a - e - i - o"
"i - e - a"