Place flour into large zip lock baggie. Add in: salt, pepper, garlic powder, onion powder, and paprika. Mix together.
Add in stew meat. Seal bag and shake until meat is well coated with flour mixture.
Heat 3 TBSP olive oil in large skillet over med/high heat. Add meat (cooking in batches if necessary), and brown well on all sides. Remove from pan.
Prep veggies (peel and chop into equal size cubes, approx. 1 1/2" in size).
Place cooked beef cubes, potatoes, onion, carrots, celery into large slow cooker.
In separate bowl, mix tomato paste into beef broth until blended.
Add broth, crushed garlic, worcestershire sauce, and bay leaves to slow cooker. At the time everything except for corn should be in slow cooker.
At the last hour of cooking, add in frozen corn.
Set to high and cook for approx. 6-7 hours or until veggies are all tender. On low temp, cook for approx. 10 hours.