דבר דבר (Dabair Davar): Making Calculations on Events Which Already Took Place Before Shabbos;
Understanding the Concept of גרמא (Grama/Indirect Action) as It Relates to the Melacha of Zoreh;
Stuffing Up the Sink to Soak the Dishes. Wearing Rubber or Plastic Gloves. Pouring Hot Water onto Fats;