I came across this looking for educational resources for teaching about puberty.  It is not specifically designed for students with intellectual and/or developmental disabilities but is very well done and could serve as a basis for instruction.  It’s available to stream free on YouTube and I’ve posted it here.  You can also find it available for purchase if you would prefer a DVD.

This is the puberty episode…

The series also has a reproduction episode but it’s presented with the baby as a “body snatcher” which I think would be very confusing.