Logic and Reasoning Teacher Resources

What is a "Disjunction"? What does "or" mean? This website answers these questions and provides examples of disjunctions used in mathematical sentences and problems.

We'll talk with author Michael Specter about his book 'Denialism: How Irrational Thinking Hinders Scientific Progress, Harms the Planet, and Threatens Our Lives.

In Spanish. Many of the great advances in mathematics have been due to attempts to solve paradoxes, have fun by reading more about paradoxes on this site.

Enjoy many of the math poems, puzzles and tricks in this math corner.

This lesson will help a learner understand counterexamples. It is 4 of 7 in the series titled "Counterexamples." [3:05]

This lesson will help a learner understand counterexamples. It is 6 of 7 in the series titled "Counterexamples." [1:54]

This lesson will help a learner understand counterexamples. It is 7 of 7 in the series titled "Counterexamples."

This lesson will demonstrate the use of CPCTC in triangle congruencey proofs. It is 2 of 4 in the series titled "CPCTC."

In this lesson, students see how they might make a prediction about facts based on what they already know. It is 8 of 9 in the series titled "Making Predictions about Facts."

In this lesson, students see how they might make a prediction about observations based on what they already know. It is 8 of 8 in the series titled "Making Predictions about Observations."

In this lesson, students see how they might make a prediction about opinions based on what they already know. It is 2 of 8 in the series titled "Making Predictions about Opinions."

Kids learn the basic rules and strategy of the game of checkers on this site.

[Free Registration/Login Required] Read Abraham Lincoln's "Gettysburg Address" and highlight details that show logos in blue, ethos in red, and pathos green. When finished, click save to see how others marked the text as well.

[Free Registration/Login Required] See the results of how users have highlighted an advertisement from ADT. Details that show logos are blue while ethos are red and pathos are green. Click on any word to see the percentage of users that...

[Free Registration/Login Required] See the results of how users have highlighted Abraham Lincoln's "Gettysburg Address." Details that show logos are blue while ethos are red and pathos are green. Click on any word to see the percentage...

[Free Registration/Login Required] See the results of how users have highlighted an article by Mary Sears entitled "How Texting Changes Communication." Details that show ethos are blue while details that show pathos are red, and details...

Generate and print out various worksheets with "magic squares", ones that are complete and ones that have blanks to be filled in by learners.

Decide which spinner is fair for each of the probability examples presented. Read the interactive quiz rules and then click on the "Begin" ticket. If you answer incorrectly you get one more chance to try again then you are told the...

At this one page website work on this challenge using your very best problem solving skills to find a reasonable answer. Actually, there are a number of solutions. When you find yours check the website to see the solutions already listed.

On this one page interactive website expand your logic, Motion Geometry and pattern recognition knowledge while working on this challenge. The solution is available to double check your solution.

Sharpen your problem solving, sequencing, and spatial reasoning skills playing this interactive game, Roll The Dice. See how many different paths you can take to end up with the same result.

Sharpen your logic and spatial sense skills while working on this challenge. Solution included.

Improve your logic and net recognition skills with this learning game. Solution included.

Test your logic and knowledge of conditionals, biconditionals, negations, conjunctions, and disjunctions in this twelve-question quiz. Answer each question on your own, then see what the answer and the reasoning behind the answer are.