I learned several new things, even though I've been using Gapminder since it first appeared.
The new education materials, the first of a batch, have now been released. Try the population activities and download some useful lesson materials free of charge. These would be very timely for revision on population issues.
There are more chances to take part in the webinar next week - no charge:
Monday 15th April 4-5pm UK time
Wednesday 17th April at 4-5pm UK time
Wednesday 17th April at 10-11pm UK time
Go HERE and use the CONTACT tab to book a place - well worth an hour of your evening.