Mathematics Vision Project
Geometric Figures
Logical thinking is at the forefront of this jam-packed lesson, with young mathematicians not only investigating geometric concepts but also how they "know what they know". Through each activity and worksheet, learners wrestle with...
Mathematics Vision Project
Module 6: Congruence, Construction, and Proof
Trace the links between a variety of math concepts in this far-reaching unit. Ideas that seem very different on the outset (like the distance formula and rigid transformations) come together in very natural and logical ways. This...
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...
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.
Khan Academy
Khan Academy: Conditional Reasoning and Logical Equivalence
How do we recognize logically equivalent conditional statements? Conditional (or "if-then") statements can be difficult to master, but your confidence and fluency on the LSAT will improve significantly if you can recognize the various...
CK-12 Foundation
Ck 12: Geometry: If Then Statements
[Free Registration/Login may be required to access all resource tools.] This concept teaches students to rewrite statements in if-then form and determine the hypothesis and conclusion. Students examine guided notes, review guided...
Khan Academy
Khan Academy: If X, Then Y Sufficiency and Necessity
In this lesson, you will learn how to recognize arguments that contain conditional statements, and learn the difference between sufficient and necessary conditions.
CK-12 Foundation
Ck 12: Geometry: Converse, Inverse, and Contrapositive
[Free Registration/Login may be required to access all resource tools.] This concept introduces students to converses, inverses, contrapositives, and biconditional statements. Students examine guided notes, review guided practice, watch...
CK-12 Foundation
Ck 12: Geometry: Converse, Inverse, and Contrapositive
[Free Registration/Login may be required to access all resource tools.] In this lesson students find the converse, inverse, and contrapositive of conditional statements. Students examine guided notes, review guided practice, watch...
Khan Academy
Khan Academy: Identify the Role Learn More
Some questions ask you to describe the individual role that a statement is playing in a larger argument. These questions require you to understand the statement in question, but even more important is your understanding of its context...