Texas Education Agency
Texas Gateway: Using Logical Reasoning to Prove Conjectures About Quadrilaterals
Given conjectures about quadrilaterals, the student will use deductive reasoning and counter examples to prove or disprove the conjectures.
Texas Education Agency
Texas Gateway: Using Logical Reasoning to Prove Conjectures About Circles
Given conjectures about circles, the student will use deductive reasoning and counterexamples to prove or disprove the conjectures.
Texas Education Agency
Texas Gateway: Introduction to Logical Reasoning
This activity provides the opportunity to explore the validity of the converse, inverse, and contrapositive of statements. It also assists in recognizing the connections between biconditional statements and true conditional statements...
Google
Google for Education: Solving a Guessing Game With Data
In this exercise students play a guessing game trying to guess what an object is. They use logical reasoning and learn about the need for efficient searching by analyzing the questions and responses to reduce the steps necessary to guess...
Texas Education Agency
Texas Gateway: Using Logical Reasoning to Prove Statements Are True
Given statements about a geometric relationship, the student will distinguish between the undefined terms, definitions, postulates, conjectures, and theorems to prove the statements are true.
Scholastic
Scholastic: Math Maven's Mysteries: Mystery at the Third Strike Sports Store
Solve a mystery using your reasoning skills. At this site use all the clues and figure out the winner of the Third Strike Contest.
Khan Academy
Khan Academy: Sufficient Assumptions Learn More
Some questions in the Logical Reasoning section ask you to identify a sufficient assumption -- that is, an assumption that would guarantee that a conclusion follows logically from the given support. How do we recognize Sufficient...
Maths Challenge
Maths challenge.net: Right Angle Reasoning
A geometry problem for students to use their mathematical reasoning skills to explain a right triangle property.
Texas Instruments
Texas Instruments: Logic Ladder App
As students work with two great activities - Factor and Classic, they learn how to use logic and reasoning skills.
Varsity Tutors
Varsity Tutors: Hotmath: Practice Problems: Logic and Proof Exercises
Twenty-five problems cover the topic of logic and proof in different geometry settings. They are given with each step to the solution cleverly revealed one at a time. You can work each step of the problem then click the "View Solution"...
Oswego City School District
Regents Exam Prep Center: Logic
Understanding mathematical language in problem solving can be a difficult concept to grasp. Sharpen your logical reasoning skills at this test prep site that explains the terms: if, and, or, implies, and only if, as they relate to math....
Texas Education Agency
Texas Gateway: Differentiate Among Empirical, Anecdotal, and Logical Evidence
[Accessible by TX Educators. Free Registration/Login Required] In this lesson, students will learn about three types of evidence that writers often rely on: logical, empirical, and anecdotal. It will also help you distinguish among these...
Texas Education Agency
Texas Gateway: Evaluating the Effectiveness of Arguments: Identify Fallacies
This lesson focuses on learning to spot logical fallacies in arguments. All of us need to acquire skills to protect ourselves from falling victim to tricks of logic. By learning to detect fallacies, you can protect your values, your...
Grammarly
Grammarly Handbook: Methods of Reasoning
A list (with examples) of common errors in logic including the following: non sequiturs, hasty generalization circular argument, ad hominem, ad populum, and red herring.
Grammarly
Grammarly Handbook: Logic in Argumentative Writing
An explanation and examples of several different types of logic that can be used in argumentative writing.
CK-12 Foundation
Ck 12: Geometry: Deductive Reasoning
[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...
University of Cambridge
University of Cambridge: Nrich: Seating Arrangements Plus!
Using your reasoning skills and the clues provided, try to figure out who is sitting where at this table of six. Check the solution and see if you are correct. You can choose similar games and math problems on this page, or choose math...
Organization for Community Networks
Ofcn Lesson Plan: Deductive Reasoning
This OFCN lesson plan offers ideas for incorporating deductive reasoning problems into the classroom.
Wikimedia
Wikipedia: Deductive Reasoning
This free encyclopedia site from Wikipedia gives a definition and examples of deductive reasoning. It also has links to related terms and topics.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Deductive Reasoning
An explanation and description of deductive reasoning in solving problems at this site from The Math Forum. Simple and helpful information.
McGraw Hill
Glencoe Mathematics: Self Check Quiz on Reasoning & Proof
The online assessment demonstrates knowledge of concepts utilized in Geometry. The multiple choice questions test students on mathematical reasoning and proof.
Georgia Department of Education
Ga Virtual Learning: Logical Fallacies List: Arguments to Avoid [Pdf]
This is a multi-page PDF list of logical fallacies to avoid when writing. These include a detailed list includes fallacies in relevance, reasoning, omission, and ambiguity; and discusses the logic tool "Occam's Razor." This list of...
Scholastic
Scholastic: Math Maven's Mysteries: The Bell Clapper Caper
Help the Math Maven get the kids out of school on time. Someone has stolen the bell's clapper and if the bell doesn't ring at 3:00, the school doors will not open! You have to figure out the last question to ask the number one suspect.
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