¾ 023 710 3100 525 RATIONAL AND IRRATIONAL NUMBERS OBJECTIVE TODAY I WILL BE ABLE TO IDENTIFY A NUMBER AS RATIONAL OR IRRATIONAL TPS WHAT DOES THE WORD RATIONAL MEAN WHAT DOES THE WORD IRRATIONAL MEAN ID: 644566
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Slide1
Warm Up
Convert each fraction to a decimal and each decimal to a fraction.
¾
0.23
7/10
3/100
5.25Slide2
RATIONAL AND IRRATIONAL NUMBERSSlide3
OBJECTIVE
TODAY I WILL BE ABLE TO IDENTIFY A NUMBER AS RATIONAL OR IRRATIONALSlide4
TPS
WHAT DOES THE WORD “RATIONAL” MEAN?
WHAT DOES THE WORD “IRRATIONAL” MEAN?Slide5
LAUNCH
Classify each animal in its proper class: mammal, reptile, bird, amphibian, fish, or invertebrate. Be ready to explain how you made your classification.Slide6
WATCH
https://www.brainpop.com/math/numbersandoperations/rationalandirrationalnumbers
/
Login: eaglet
Password: eagletSlide7
VOCABULARY
RATIONAL NUMBER
IRRATIONAL NUMBERSlide8
Rational Numbers
Can be written as a ratio or fraction
Includes:
fractions,
positive whole numbers,
negative whole numbers,
decimals that repeat (like 1.21212121),
decimals that terminate/end (like 3.256),
And 0Slide9
Irrational Numbers
Numbers that cannot be written as a ratio/fraction
Includes:
Decimals that do not repeat and do not terminate
Example: 2.345731157783839184…
Example:
Slide10Slide11
Frayer Model
Use the information from this
powerpoint
(including the video and the previous 3 slides) to complete a
frayer
model for your two vocabulary words: rational numbers and irrational numbers. Slide12
Examples
Directions: Write these examples in your notebook under a heading titled “Examples”
-5 is rational because it is a whole number
½ is rational because it is a fraction
0.3333333… is rational because it is a repeating decimal
-3.128475839725… is irrational because it is a decimal that does NOT end or repeat
0 is rational because it is a whole number
is irrational because it is a decimal that does NOT end or repeat
is 3.1415926535897932384626433832795028841971…
Slide13
Practice
CUT THE NUMBER CARDS OUT. IN YOUR NOTEBOOK, GLUE THE RATIONAL NUMBERS ON THE RIGHT AND THE IRRATIONAL NUMBERS ON THE LEFT. WRITE A SENTENCE BESIDE EACH NUMBER TO JUSTIFY WHY IT IS RATIONAL OR IRRATIONAL.
EXAMPLE: 17 WOULD BE GLUED ON THE RIGHT. You would write “17 is a rational number because all whole numbers are rational”. Slide14
STOP HERE
MS. HARLESS WILL GIVE YOU INSTRUCTIONS FOR THE NEXT ACTIVITY. IF YOU ARE WAITING, PLEASE RESPOND TO THE FOLLOWING WRITING PROMPT IN YOUR NOTEBOOK:
How would you explain to a new student the difference between a rational number or irrational number? Slide15
CFU
Identify each as rational or irrational: 1.31313…, 5, pi, -1/2, 2.45613…Slide16
TOTD
Identify as rational or irrational:
,
-
17,
.4545, -0.23453275…,