Louise, I recommend that you acquire a copy of "Adobe Photoshop Elements Classroom in a Book". Not that you would use that book in a class, but reviewing it will show you a very logical and methodical way to organize your instruction. What is a logical sequence to follow in "presenting Elements".
I was totally lost when I started with PSE and finding out about and buying this book was the best thing I ever did. When I bought my book I, of course, bought the current edition that covered the version of PSE that I had just upgraded to. It cost $25 from Amazon. But, I have seen the exact same book at eBay and some other sites for only four or five dollars. Why so little? They were not for the current version of Elements.