Special Words/Phrases
Chapter Name : Mathematical Reasoning |
Sub Topic Code : 104_11_14_04_02 |
Topic Name : Special Words/Phrases |
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Sub Topic Name : The Word "Or" |
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Introduction
• Deductive reasoning is arriving at conclusion using facts, rules, and definitions. • Deductive reasoning uses special word OR to form compound sentences. • Special word OR used to form compound sentences is called Connective. • We use OR in two ways one is Inclusive OR and the other Exclusive OR.
Pre-Requisites:
Knowledge of Component statements, Compound statements, Deductive reasoning.
Real Life Question:
I will buy Pepsi or orange juice. Identify the type of connective is used.
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Deductive reasoning | Deductive reasoning is arriving at conclusion using facts, rules and definitions. |
| Compound statement | Compound statement is a statement that contains two separate ideas joined together by connective. |
| Component statement | Each statement in a compound statement is called component statement. |
| Inclusive OR | For given any two options, inclusive OR is satisfied when one option, the other option or both options occur. |
| Exclusive OR | For given any two options, exclusive OR is satisfied when one option or the other option but not both options are satisfied. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| http://www.ehow.com/info_12015563_fun-activities-using-deductive-reasoning.html | Fun activities for deductive reasoning. |
Real life uses :
Deductive reasoning is used in criminal investigations.
Places to visit :
How can we use the connective OR for framing compound sentence on water?
Practical examples around us
| Examples | Explainations |
|---|---|
| Crime investigation | Deductive reasoning is reasoning from general to particular. In criminal investigations investigator starts with general information and reaches to a particular decision. |
What you learn in Theory:
Connective OR is used to frame compound statements in deductive reasoning.
What you learn in Practice:
When we use deductive reasoning we can be certain that the conclusion is true as long as the rules are true.