is anyone doing signalong???

[dsrplus8]

help, we are trying to learn signalong and am finding it hard to get the kids to get intrested.dd4 is comming along quite well and has picked up a few signs(milk,eat,bubbles)i think that if her siblings do sign too she would improve faster and they could "talk" with her.any ideas on how to get them on side,banging head against the wall here.(thud, thud,thud,ouch)??????

dd's school does sign a long. and I tool a couse on it.
it is quiet hard to begin with.could you just not start with the simple signs and work upwards.
how old are the siblings?

#1 dsd 16,#2 dss 14,#3 dd 13,#4 dd 10,#5 ds 8, #6 dss 6 and #7 ds 3yrs twin to dd whos doing the sign .do you follow?