Today Is… Wed, Nov 1st Warm-up Classify as rational or irrational numbers 𝟐𝟐𝟎 8.95 -2 −𝟔𝟒 3.0500500005………… Announcements: -Perfect Cubes skills Friday Nov 3 #’s 1-5 only HW: -Finish worksheet -Perfect Cubes skills Friday Nov 3 #’s 1-5 only Today in class students will be learning…. how to calculate square and cube roots because carpenters, engineers, and architects use them daily in their profession.

 Today Is… Wed, Oct 24 Neon Day Announcements: Red Ribbon Week Tues – Wear RED Wed – Neon Day Thurs – Hat Day Friday – Lovinggood/Hillgrove Spirit wear HW: Finish worksheet Today in class students will be learning…. how to use scientific notation because it helps me write really large number and really small numbers more easily.

Course 3 4-4 Scientific Notation An ordinary quarter contains about 97,700,000,000,000,000,000,000 atoms. The average size of an atom is about 0.00000003 centimeters across. The length of these numbers in standard notation makes them awkward to work with. Scientific notation is a shorthand way of writing such numbers.

Vocabulary 4-4 Scientific Notation scientific notation Word Definition Course 3 4-4 Scientific Notation Vocabulary Word Definition scientific notation A form of writing very large & very small numbers. Written as: Decimal number greater than or equal to 1 and less than 10. Multiplied by power of 10. Ex: 1800 = 1.8 x 103

Introduction video: https://www.youtube.com/watch?v=Wf-HlVqZPHY Scientific Notation Introduction video: https://www.youtube.com/watch?v=Wf-HlVqZPHY

Is always a power of 10. The power of the exponent tells you how many places to move the decimal. A number that is greater than or equal to 1 and less than 10. It may or may not be a decimal.

Write on p. 52 in MSG Ex 1: Write 4,900,000 in scientific notation. Helpful Hint! If the number is getting SMALLER, the exponent is getting LARGER. If the number is getting LARGER, the exponent is getting SMALLER.

Ex 2: Write 497.23 in scientific notation. Helpful Hint! If the number is getting SMALLER, the exponent is getting LARGER. If the number is getting LARGER, the exponent is getting SMALLER.

Ex 3: Write 0.0043 in scientific notation. Helpful Hint! If the number is getting SMALLER, the exponent is getting LARGER. If the number is getting LARGER, the exponent is getting SMALLER.

Ex 4: Write 90,080 in scientific notation. Helpful Hint! If the number is getting SMALLER, the exponent is getting LARGER. If the number is getting LARGER, the exponent is getting SMALLER.

Do Now Study for vocab check After vocab check turn into my inbox & take out homework from last night and prepare to ask questions

Ex 5: Write 1.3× 10 −5 in standard notation. Helpful Hint! If the number is getting SMALLER, the exponent is getting LARGER. If the number is getting LARGER, the exponent is getting SMALLER.

Ex 6: Write 4.671× 10 3 in standard notation. Helpful Hint! If the number is getting SMALLER, the exponent is getting LARGER. If the number is getting LARGER, the exponent is getting SMALLER.

Ex 7: Write 8× 10 −1 in standard notation. Helpful Hint! If the number is getting SMALLER, the exponent is getting LARGER. If the number is getting LARGER, the exponent is getting SMALLER.

How to read scientific notation on calculator Multiply 4,000,000 x 4,000,000 on calculator =1.6 E12 “E” Stands for “exponent” So, this is 1.6× 10 12

Practice: 1. Front side of last night’s homework 2 Practice: 1. Front side of last night’s homework 2. When you are finished, begin work in workbook. Problems listed under #4 on today’s agenda -----------------------

Ticket out the door (write on a scratch sheet of paper and hand to me before you leave) Write 8,000 in scientific notation. Write 9.23× 10 −2 in standard notation.

Warm-up Take out homework from last night and prepare to ask questions Announcement: Timed skills check over perfect cubes and cube roots #’s 1-5 tomorrow!

Do Now Study for vocab check After vocab check turn into my inbox & take out homework from last night and prepare to ask questions

How to read scientific notation on calculator Multiply 4,000,000 x 4,000,000 on calculator =1.6 E12 “E” Stands for “exponent” So, this is 1.6× 10 12

Work Session Card sort – with table group, order numbers from least to greatest After you are finished, call Mrs. Bullock over to check For the remainder of class, work on the problems listed under #4 on today’s agenda.

Ticket out the Door Explain how to write a number that is between 0 and 1 in scientific notation. Use an example to illustrate your explanation.

Warm-up Turn in your vocabulary activity to my inbox. Quickly review your perfect cubes and cube roots for today’s skills check!

Cube & Cube Roots Skills Check You will have 5 minutes exactly to complete. After you are done, turn over on your desk & sit quietly.

Review: Multiply: 2 𝑚 3 ∙4 𝑚 4

Multiplying in SN Example at top of page *****ALWAYS: Double check to make sure your ANSWER is in scientific notation

Multiplying in SN #1 Multiply: (1.5 ×10 2 )∙(2.0 ×10 2 ) *****ALWAYS: Double check to make sure your ANSWER is in scientific notation

Multiplying in SN #3 Multiply: (6.5 ×10 −3 )∙(4.0 ×10 −2 ) *****ALWAYS: Double check to make sure your ANSWER is in scientific notation

Review: Divide: 9.6 𝑚 7 1.6 𝑚 4

Dividing in SN Example at top of page Divide: 9.6 ×10 7 1.6× 10 4 *****ALWAYS: Double check to make sure your ANSWER is in scientific notation

Dividing in SN #6 Divide: 6.0 ×10 4 3.0× 10 2 *****ALWAYS: Double check to make sure your ANSWER is in scientific notation

Dividing in SN #10 Divide: 2.1 ×10 2 8.4× 10 5 *****ALWAYS: Double check to make sure your ANSWER is in scientific notation