1 / 24

If this dog weighs 22.4 lbs, how much does she weigh in kg?

If this dog weighs 22.4 lbs, how much does she weigh in kg?. DO NOW. Work it Out. Tuesday, September 02, 2014. Thursday, 09/02/14. Agenda. Do-Now (5) Dimensional Analysis… like bosses (15) Work it out! (17) You got this! (10) Exit Ticket (5). Expectations (Intro to New Material).

jocelyn-mays
Download Presentation

If this dog weighs 22.4 lbs, how much does she weigh in kg?

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. If this dog weighs 22.4 lbs, how much does she weigh in kg? DO NOW Work it Out Tuesday, September 02, 2014

  2. Thursday, 09/02/14

  3. Agenda • Do-Now (5) • Dimensional Analysis… like bosses (15) • Work it out! (17) • You got this! (10) • Exit Ticket (5)

  4. Expectations (Intro to New Material) • No talking while I, or anyone else, is speaking • Raise your hand if you have something to say • Stay seated • Take notes as directed

  5. Why is Dimensional Analysis important? • Time, length, and weight are all separate dimensions • You can only convert between measurements within the same dimension For example: • Time can be measured in seconds, minutes, or hours • You CAN convert seconds  minutes  hours • You CANNOT convert seconds  centimeters

  6. Dimensional Analysis • Dimensional Analysis is the problem solving method we will use to convert between units • To change from one unit to another we will use a conversion factor: Unit1xconversion factor = Unit2

  7. Take a Minute… • The CHS junior class decides to hold a bake sale to raise money for prom next year. If they need 5 dozen cookies to raise $50, how many cookies should the make to equal 5 dozen?

  8. You used dimensional analysis to find the answer… and probably didn’t even know it! 12 1 dozen 5 dozen cookies x = 60 cookies! This is a conversion factor!

  9. Dimensional Analysis • Equivalence Statement: Two measurements with the exact same value • Example: 12 = 1 dozen • Conversion Factor: ratio of the two parts of an equivalence statement • Example 12/1 dozen OR 1 dozen/12

  10. WORK IT OUT! • Highlight or circle 1 inch = 2.54 cm on your common conversions sheet • In your notes, write the 2 possible conversion factors for 1 inch = 2.54 cm

  11. Dimensional Analysis 1. Identify your given. Circle it in the problem and write it down. 2. Identify your unknown. Circle it in the problem and write it down. The length of one lab desk is 38 inches. What is the length in centimeters?

  12. Dimensional Analysis 3. Find the equivalence statement that relates the two units. G: 36 in U: centimeters 1 in = 2.54 cm

  13. Dimensional Analysis 4. Choose the correct conversion factor based on your given and unknown. 1 in/2.54 cm OR2.54 cm/1 in

  14. Dimensional Analysis 5. Multiply your given by your conversion factor and cross off the units that cancel! 36 in x2.54 cm = 91.44 cm 1 in

  15. Agenda • Do-Now (5) • Dimensional Analysis… like bosses (15) • Work it out! (17) • You got this! (10) • Exit Ticket (5)

  16. Expectations (Group Practice) • 100% Participation • Raise your hand if you have a question • If I am helping someone else ask another group or move on and I will get to you • You may hold up a pass if you need to leave the room

  17. Work it out! • The lizard Ms. McNutt found in the storeroom was 5.62 cm long. What was the length of the lizard in inches?

  18. 1. What is the given in the problem? 2. What is the unknown in the problem? 3. What is the equivalence statement that relates the two units? 4. What are the two conversion factors that we can write based upon the equivalence statement? Circle the conversion factor we will use for this problem. 5. Write out the entire problem on your paper, cross off your units, and circle your final answer.

  19. Work it out! • Complete #2-5 with your elbow partner • Raise your hand when you are done • You have 12 minutes

  20. Agenda • Do-Now (5) • Dimensional Analysis… like bosses (15) • Work it out! (17) • You got this! (10) • Exit Ticket (5)

  21. Expectations (Independent Practice) • NO Talking • You are working ALONE to make sure that YOU understand it • Raise your hand if you have a question • If I am helping someone else, move on and I will get to you • You may hold up a pass if you need to leave the room

  22. You Got This! • You have 10 minutes to work on the Dimensional Analysis Worksheet • Whatever you don’t finish will be due for homework on FRIDAY, 8/31

  23. Agenda • Do-Now (5) • Dimensional Analysis… like bosses (15) • Work it out! (17) • You got this! (10) • Exit Ticket (5)

  24. Exit Ticket • You have the rest of the period to complete your exit ticket • Turn it in to me on your way out • Answer ON YOUR OWN and HONESTLY – I want to know what you learned today!

More Related