I've posted lots of links to Japanese high school below. Baymax is on the J1 blog- please check it out!
Here's a tutorial on relative clauses (Keiko Flores sensei is very nice and funny). Below a lesson on to iu (also on usage of NO).
Here's a tutorial on relative clauses (Keiko Flores sensei is very nice and funny). Below a lesson on to iu (also on usage of NO).