Preheat oven to 450 degrees. Soak yeast in water and sugar for 5 minutes. Add flour, then add salt continue to knead for 5 minutes until flour is well blended and a dough ball forms. Cover and let rise in a warm place for 30 minutes. Roll dough to fit a 12-inch disposable pizza pan. Top pizza with tomato sauce and toppings of your choice. Bake for 10-15 minutes or until the cheese is browned and bubbly.