1. Wed 8/28 or Thur 8/29 Any classroom supplies you have brought will be collected later, hang on to them. Prepare for Elements Quiz 1 – Quiz will begin 2 minutes after the bell – Timed quiz: 5 minutes Let’s grade it!

2. Now that you’ve practiced! The real quiz will be at the end of the period. 5 minutes to take. No this one does not count, even if you made a 100.

3. Your first packet Assignment page—it will be very useful! Unit organizer—know what we are covering Karma questions—review! The notes and practice

4. Rounding Numbers

5. Rounding a number is when you take a number and "bump it up" or "bump it down" to a nearby and "cleaner" number. $4.99 rounds up to $5 $9.02 rounds down to $9

6. Rounding Numbers A number can be rounded to any place value you want. Car prices: $13,473.99 can round to Ones place: $13,474 Tens place: $13,470 Hundreds place: $13,500 Thousands place: $13,000

7. Rounding Numbers Rounding means reducing the digits in a number while trying to keep its value similar. Calculator answers: 5.2847284729 can round to One decimal place: 5.3 Two decimal places: 5.28 Three decimal places: 5.285 No decimal places: 5

8. How to Round Numbers Decide which is the last digit to keep Leave it the same if the next digit is less than 5 This is called rounding down Example: Round 74 to the nearest 10 74 Answer: 70 (74 gets "rounded down") keep < 5

9. How to Round Numbers Decide which is the last digit to keep Increase it by 1 if the next digit is 5 or more This is called rounding up Example: Round 86 to the nearest 10 86 Answer: 90 (86 gets "rounded up") keep > 5

10. Do you know your places? In your groups, work on the examples. Be sure you all agree on your answers and your reasoning (the because column)

11. Rounding Exit Ticket On a post it, write your name, then copy what is below. Original: 1568.234 Rounded to hundredths: Rounded to hundreds:

12. Brain Pop! Page 8 in packet

13. Time to Multi-task EDMODO SIGN UP Take ONLY the computer # you have been assigned (see binder on COW cart) If you don’t have your syllabus go to the class website: beattybowie.weebly.com Logon to Edmodo – Join the correct group – Change notifications to receive as text/email COPY DOWN YOUR LOC LIST Quiz next class period (Fri/Tues) CLASSROOM SUPPLIES Bring them up. STUDY FOR YOUR ELEMENTS QUIZ ROUNDING PACKET HOMEWORK Page 3 a.-i. When you are completely done with the laptops, DO NOT LOG OFF. Instead please SHUT DOWN

14. Elements Quiz #1 Timed: 5 minutes This one counts! (no pressure)

15. Language of Chemistry (LoC) List 1 x 2 The “2” is a subscript (s) solid. written after a chemical formula x 2 The “2” is a superscript ( l ) liquid. written after a chemical formula 2x The “2” is a coefficient (g) gas. written after a chemical formula → “yield”; shows a chemical reaction took place ( aq ) aqueous. written after the formula for a chemical dissolved in water. Chemical formula A 2 B, element symbols and subscripts Chemical equation 2A + B → A 2 B, chemical formulas, a yield sign, and coefficients (usually)

16. Exit Ticket and Homework Homework Finish page 3 a-i Study for LoC List #1 quiz on Fri/Tues