Both of my twins have speech assistance machines. Miles doesn't seem to need his so much anymore, or would rather use it to play. But Charlie can use his to express need which is a huge deal.
If you don't know why it's a big deal to express need, picture two six year olds who scream hysterically and thrash around when they want something, versus just asking you for it.
Imagine your six year old like a newborn - where you were just trying everything till you hit the right thing.
That was where we were before they started school.
What a difference.
Some people have expressed interest in what these machines are like, so this is a brief example. Charlie was grumpy so we used the machine to have us tell him what he wants.