Real Number System Intervention

Real Number System Intervention

Poll

How comfortable are you with classifying real numbers?

• Very comfortable

• Comfortable

• I'm okay, but not really sure

• I have no idea how to classify

Natural & Whole Numbers Review

​The numbers we use for counting are the natural numbers: 1, 2, 3, 4, 5, and so on

​

​The set of whole numbers is the set of natural numbers plus zero: {0, 1, 2, 3,…}

​Integers Review

​The integers include all whole numbers together with the “negatives” of the natural numbers.

Multiple Choice

How would you classify -4?

• Whole Number

• Integer

• Natural Number

Multiple Choice

How would you classify the number 0?

• Whole Number

• Natural Number

• Irrational Number

Multiple Choice

True or false.

The number 7 is a natural number.

• True

• False

​Rational vs Irrational Review

The rational numbers are numbers which can be expressed as a fraction

Caution: The denominator cannot equal zero.

​Rational numbers can also appear in decimal form. If the decimal number either terminates or repeats, then it is possible to write it as a fraction with an integer numerator and denominator. Thus, it is rational as well.

​

​The irrational numbers are all numbers which when written in decimal form do not repeat and do not terminate.

​What do you notice about rational vs irrational?

Multiple Choice

How would you classify $$\sqrt[]{8}$$  ?

• Whole Number

• Rational Number

• Integer

• Irrational Number

Multiple Choice

How would you classify  $$\frac{5}{9}$$  ?

• Integer

• Rational Number

• Whole Number

• Irrational Number

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Fill in the Blank

Every single number in the world is called a(n)

Poll

How comfortable are you with classifying real numbers now?

• Very comfortable

• Comfortable

• I am okay, but need to study a bit more

• I am unsure and need tutoring before or after school