At this website, learn terms "Conditional," and "Implication," and their relationship to mathematics and logic. Includes examples of "If, then," sentences that are both "True," and "False," as well as a "Truth table."

An integrated geometry lesson plan on spatial sense in which young scholars identify and use different shapes to create a tessellation. "Through a variety of modalities such as writing, music, art, poetry, and literature, students are...

Investigating designs and shapes in quilts around the world is the activity in this internet exploration. Learners will also design their own quilt on paper or on the computer. Acrobat Reader required.

This step-by-step tutorial teaches students how to construct a bisector of a segment and the bisector of an angle.

This site provides a step-by-step method to construct congruent segments and angles with a straight edge and compass.

This step-by-step method teaches students to construct a perpendicular to a line through a point on--or off--the initial line using compass and straight edge.

This intuitive explanation shows how to determine if an object has point symmetry. The site offers examples of objects with point symmetry.

Fun graphics and realistic problems in point symmetry for students to solve and check.

This step-by-step demonstration teaches students to construct a line parallel to another through a given point.

Learn what a conjunction is and why it is important to know what a conjunction is when using logic to solve mathematical problems. This website includes examples of the conjunction "and" used in mathematical sentences and a "truth table."

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

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.