At the beginning of the lesson I tell them the "tools" that they need to have in their toolbox in order to master the new skill. I actually make a slide with a toolbox graphic on it and have them put it in their ISN.
For example for combining fractions they needed:
- Add and subtract integers
- Find the LCM/LCD
- Simplify fractions
Then the best part is I had them write the page number that these topics were on in their ISN! Now when they are working and get stuck, I tell them to go their toolbox. It seems to be an great solution so far!