250000 subscribers and his educational videos have more than 29000000 clicks. if you can't link cogs together directly then you use a chain like a bicycle. router morgan. my plots you've accomplished with you'll get a tally chart for me that you will use to make graphs the economic day ok it is a math teacher and the principal of a secondary school in northern germany. he uses his videos in math class to where students can look things that. become a. test a vision of hope but it just i think it's really great that we've got a teacher doing this a task. directly encouraging explain things well and it's helpful and.