In this law of syllogism and law of detachment instructional activity, students solve 4 short answer problems. Students use the law of syllogism or law of detachment to come to a conclusion about a set of if-then statements.

In this law of syllogism/detachment worksheet, students solve 10 short answer problems. Students combine two or three if-then statements using the law of syllogism or law of detachment.

For this angles, lines and figures review worksheet, 10th graders solve and complete 33 standardized multiple choice problems. First, they use the Segment Addition Postulate to solve for a variable given an equation for each line. Then,...

Solve and complete 18 problems about angles. First,  demonstrate that each conjecture is false by giving a counterexample. Then write the inverse, contrapositive, and converse for the each statement. In addition, write a...

In this deductive reasoning worksheet, students solve ten different problems by applying deductive reasoning to each one. First, they determine if a valid conclusion can be reached from each of the 2 true statements given using the Law...

In this deductive reasoning instructional activity, 10th graders solve 6 various problems applying deductive reasoning to each. First, they determine if a valid conclusion can be reached from the 2 true statements using the Law of...

In this conditional statements worksheet, 11th graders solve and complete 15 various types of problems. First, they determine if a conclusion can be reached from the two statements using the law of detachment or the law of syllogism....

In this geometry worksheet, 10th graders use Venn diagrams to describe conditional statements and use the Law of Detachment or the Law of Syllogism to find a valid conclusion to an argument.  The two page worksheet contains fourteen...

For this truth table worksheet, students construct truth tables to show that Modus Ponens and Hypothetical Syllogism are valid arguments. This one-page worksheet contains two problems.

In this contrapositive and converse statements worksheet, 10th graders solve and complete 14 different problems. First, they write the contrapositive and the converse of each statement. Then, students write the conclusion of the...

Your class may believe that geometry is a trial, but they don't know how right they are. A thorough math lesson combines the laws of logic with the laws of geometry. As high schoolers review the work of historical mathematicians and...

Having a good working knowledge of math vocabulary is especially important for geometry learners. Here are 119 pages worth of wonderfully constructed definitions, constructions, formulas, properties, theorems, and postulates. This is a...

Introduce pupils to the two types of reasoning, inductive and deductive. Classmates work in pairs or small groups to learn the difference between the two and apply these reasonings to develop valid conclusions. 

If there is a conditional statement, then there is a hypothesis and conclusion. Pupils learn how to identify the parts of conditional statements. Class members continue to work with conditional statements and rewrite them in their many...

In this algebra worksheet, students define and use not, and, or. They also discuss how biased or valid a test is. They apply logic to solving real life scenarios and word problems.

In this geometry worksheet, 10th graders identify the inverse, converse and contra-positive in each given sentence. They rewrite the sentences to make the statement true. There are 6 questions with an answer key.

In this contrapositive worksheet, high schoolers solve 6 multiple choice and short answer problems. Students write the contrapositive of a conditional statement.

From a larger college website, this page provides a good description of syllogisms as well as inductive reasoning.

The resource investigates tautological implications and tautological equivalences. The tutorial examines direct reasoning, indirect reasoning, and disjunctive syllogism. Students learn about logic concepts through notes and examples....

[Free Registration/Login may be required to access all resource tools.] This concept introduces students to deductive reasoning using the laws of detachment, contrapositive, and syllogism. Students examine guided notes, review guided...

[Free Registration/Login may be required to access all resource tools.] In this lesson students use deductive reasoning to solve problems. Students examine guided notes, review guided practice, watch instructional videos and attempt...

A very challenging game of strategy and skill from Backgammon Galore. The student plays backgammon against a computer program. Included is a page on instructions so the student can learn the game.

This lesson introduces deductive reasoning and the laws of logic. It is 4 of 7 in the series titled "Deductive Reasoning and the Laws of Logic."

This lesson introduces deductive reasoning and the laws of logic. It is 6 of 7 in the series titled "Deductive Reasoning and the Laws of Logic."