Structured English Immersion
posted by Amanda .
How can the continuum of strategies be used inappropriately in the classroom?

Rushing through lessons too fast for students to understand is one way.
What else can you think of? 
If you want to know the theory behind second language acquisition, as well as strategies for students to be successful, be sure you're very familiar with Prof Stephen Krashen's work:
http://www.sdkrashen.com/SL_Acquisition_and_Learning/index.html
Read through the chapters that are linked at the left.