**Title:** Mathematical Proofs

**Description:**
In this lesson, from Science NetLinks, students explore the nature of logic, evidence, and proofs in the context of mathematics. This lesson would be appropriate after students are familiar with the Pythagorean Theorem.
**Standard(s): **

[MA2015] MI1 (9-12) 12: Summarize the history of probability, including the works of Blaise Pascal; Pierre de Fermat; Abraham de Moivre; and Pierre-Simon, marquis de Laplace. (Alabama)

**Subject:**Mathematics

**Title:**Mathematical Proofs

**Description:**In this lesson, from Science NetLinks, students explore the nature of logic, evidence, and proofs in the context of mathematics. This lesson would be appropriate after students are familiar with the Pythagorean Theorem.

**Thinkfinity Partner:**Science NetLinks

**Grade Span:**9,10,11,12

**Title:** Venn Diagrams and Logic

**Description:**
This lesson, from Illuminations, focuses on using Venn diagrams to explore direct, indirect, and transitive reasoning. Students work in groups to construct arguments based on Venn diagrams and create Venn diagrams for a particular argument. Several pieces of literature appropriate for use with this lesson are suggested.
**Standard(s): **

[MA2015] DM1 (9-12) 11: Solve application-based logic problems using Venn diagrams, truth tables, and matrices. (Alabama)

**Subject:**Mathematics,Philosophy

**Title:**Venn Diagrams and Logic

**Description:**This lesson, from Illuminations, focuses on using Venn diagrams to explore direct, indirect, and transitive reasoning. Students work in groups to construct arguments based on Venn diagrams and create Venn diagrams for a particular argument. Several pieces of literature appropriate for use with this lesson are suggested.

**Thinkfinity Partner:**Illuminations

**Grade Span:**9,10,11,12