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Logic and Proofs Videos


Conditional Statements

If you already know what a conditional statement is, then you're smarter than you look. And boy do you look smart.


Algebraic Proof Videos 8 videos

CAHSEE Math 5.1 Mathematical Reasoning
209 Views

Mathematical Reasoning Drill 5, Problem 1. Which of the following could be the number of pieces the lasagna was cut into?

CAHSEE Math 5.3 Mathematical Reasoning
231 Views

Mathematical Reasoning Drill 5 Problem 3. Which of the following could be the integer mentioned?

CAHSEE Math 5.5 Mathematical Reasoning
196 Views

Mathematical Reasoning Drill 5, Problem 5. How many pencils could Mrs. Morrison have had?

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Formal (Two-Column) Proof Videos 2 videos

Formal Proofs
1858 Views

Formal proofs present the oh-so-mathematical evidence in two columns: one for the statement they are claiming is true, and the other for the reason...

Indirect Proofs
1734 Views

Indirect proofs (or proofs by contradiction) prove their conclusion by showing that the opposite cannot be true. You can use this in math and in ar...

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Informal (Paragraph) Proof Videos 2 videos

Formal Proofs
1858 Views

Formal proofs present the oh-so-mathematical evidence in two columns: one for the statement they are claiming is true, and the other for the reason...

Indirect Proofs
1734 Views

Indirect proofs (or proofs by contradiction) prove their conclusion by showing that the opposite cannot be true. You can use this in math and in ar...

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Mathematical Statements Videos 1 videos

CAHSEE Math 2.5 Mathematical Reasoning
201 Views

CAHSEE Math Mathematical Reasoning: Drill 2, Problem 5. Which of the following conclusions can be drawn based on the above information?

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