HMH: into Math Student workbook Grade 4, Modules 1-9 Paperback

Forget trying to help your kid with his homework if you don't have an answer key. There's no instruction in the kid's book. And the explain your answer and describe your strategy you used parts of the questions are maddening. The kids just sit and stare at the page because they don't know how to answer it. Not one teacher I've spoken to likes teaching from this book. Save your sanity and go back to something similar to Saxon.