How we keep track of the truthiness

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Presentation transcript:

How we keep track of the truthiness Truth Tables 101 How we keep track of the truthiness

Recall... We use letters for statements=sentences that are True\False: \ =”and” =”not” =”or” =”implies”

But First Group Work From Last Time!

TRUE? When is… Can be TRUE Can be TRUE Can be TRUE Can be FALSE

So Much...

Keep a table:

Fill out table: Only time it is true!

How about…

Keep a table:

Fill out table: Only time it is false!

Don’t forget the English... When is the following statements true/false: It is raining outside and Rob has on a red hat It is sunny or cold outside

TRUE: False: It is raining outside and Rob has on a red hat Rob has a red hat on is true and it is raining outside is true False: Rob has a red hat on is false or it is raining outside is false translate

TRUE: False: It is sunny or cold outside It is sunny is true or It is cold is true False: It is sunny is false and it is cold is false translate

So what’s that not all about?

Keep a table: Not flips the values!

Group Work: