Note: I add 1 Tblsp. margarine to the thickened sauce before pouring over berries in pie shell).Puree 1.5 cups berries in blender or food processor. Combine sugar and tapioca, blending well with a fork. Stir into pureed berries. Add half c.water; blending well. Microwave on HIGH for 2 minutes. Then stir with fork or wire whisk. Microwave 2 more minutes or until thick. Stir to smooth. Arrange remaining berries in bottom of baked, cooled pie shell. Spoon or pour sauce over fresh strawberries .Chill and serve with whipped cream.