Translation of untie in German

If I wanted to integrate the above demo on our page, would we need to work with Vocabulix or do you have some other options? Could you send me some samples of other teachers, who integrated this demo?
As promised, I am sending you in the attachment a (very) little overview of some applications we created on Vocabulix. Please send me also some infos about your activities. When would be the best time to talk?
I had to get used to riding the bike and I almost fell a few times. I drove on the main road and stopped at several little villages near the beach. The locals were very friendly and welcoming.