Combine 3/4 cup flour, 1 teaspoon garlic powder and 1 teaspoon paprika in a plastic bag; shake to mix well. Toss the beef cubes in the flour and shake the bag to coat evenly. Remove the beef from the plastic bag, shaking off excess flour mixture; Brown the beef in a skillet with a little oil in batches, Place the beef at the bottom of the crockpot, top with the vegetables and add in the seasoning ingredients. Cook on low for 8 to 10 hours. 30 minutes before serving, add 1/3 cup of cold water blended with 3 Tablespoons of flour. Cook on high until thicken. Skip this step if it's not necessary to thicken the broth.