Informal Logic

Which of the following best defines logic?

• An improper way of thinking about something

• Penguins

• Of sound reasoning

• Hasty Generalization

True or False: Logical Fallacies are a type of informal logic

• True

• False

• Red Herring

An argument that is reached from given premises.

• Premise

• Conclusion

• Valid

• Sound

A statement or proposition from which another is inferred or follows.

• Premise

• Conclusion

• Valid

• Sound

Based on the picture, which conclusion is the most logical?

• The blue car will most likely come in first place.

• The red car will most likely come in first place.

• The yellow car will most likely come in first place.

Is this logical?

If all insects have six legs, and all ants are insects, then all ants must have six legs.

• Yes, this is logical; the premises support the conclusion.

• No, this is not logical. There is a false premise.

• No, this is not logical. There is a false conclusion.

Is this logical?

If all birds have wings, and some insects have wings, then insects must be birds.

• Yes, this is logical; the premises support the conclusion.

• No, this is not logical. There is a false premise.

• No, this is not logical. There is a false conclusion.

Based on the picture, which premise is true?

• The blue shop is to the left of the green shop.

• The red shop is to the right of the blue shop.

• The pink shop is the tallest.

Drawing Conclusion. Make a sensible reasoning or conclusion to the situation.

As she sat on the front porch, Lulu wiped the sweat from her face and took another drink of water.

What conclusion can you draw from the sentence above?

• It was cold.

• A storm was coming.

• Lulu lives in Michigan.

• It was hot.

Drawing Conclusion. Make a sensible reasoning or conclusion to the situation.

As his mother honked the horn outside, Tom ran down the stairs, buttoning his shirt.

What conclusion can you draw from the sentence above?

• Tom liked to run.

• Tom was hurrying.

• Tom was hungry.

• It was raining.