A good teacher helps students' language skills by pushing beyond their interlanguage so that they could improve their language. To think about the situation in Japan, teachers spend a lot of time in teaching language. In this way, they don't have enough tie to the content using English. If they do so, students could have comprehensible English. On the other hand, students in Canada have more chances to notice and practice English.
To ensure students understand, using a lot of pictures will stimulate interest in language. In the language activity, teachers need to push students to make sentences. Since it is important to make students understand, teachers also need to care for the grammar or the form sometimes. More importantly, they should make the whole activity go smoothly.