This website is a great tool for at home use as it offers the most correct word to word translations based on meaning.  Google translate is never recommended as it only uses one word meanings.  For example, un livre in French in the masculin form is a book.  However, une livre in the feminin form changes the meaning completely as in this form it means a pound.  This is something to be wary of if your child is working on an at home writing assignment.