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## Catalyst

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**Catalyst**1. How do I feel about my benchmark scores? 2. What could I have done to improve them? 3. Is there anything Mr. Astor can do to help me? End**Balancing Equations Quiz Tomorrow**• You will have 20 minutes to complete the quiz. • We will grade it when everyone is completed.**Dollars to Rand**1$= 7.05 RAND**Today’s Learning Targets**• LT 3.3 – I can discuss how to convert between two related units and explain how to complete a multi – step conversion problem involving unrelated units.**I. Conversion Factors**• To convert between two different units we use a conversion factor. • A conversion factor allows you to convert between units.**I. Conversion Factors**Units You Want Number with New Units Number that you have Units You Have**Conversion Factors Example – Convert $15 to cents**100Cents 1500¢ 15 Dollars 1 Dollars**Table Talk**• Convert 250 cm to inches (Note – 1 in = 2.54 cm)**II. Multi-Step Conversions**• Often times, we need to take multiple steps to convert between units. • We must set up a series of conversion factors so that all unnecessary units cancel one**Convert 3 hours to seconds**60 min 60 sec 3 hours 10,800 sec 1 hour 1 min**Table Talk**• How many days are there in 525,000 seconds? (Note – 1 day = 24 h, 1 h = 60 min, and 1 min = 60 s)**Question 1**• Convert 500 minutes into seconds**Question 2**• You have 5 dozen doughnuts, how many doughnuts do you have (12 doughnuts = 1 dozen)**Question 3**• You have 14 cups of water, how many gallons of water do you have (1 gallon = 4 quarts; 1 quart = 4 cups)**Question 4**• You have 32 cups of solution. How many gallons do you have? (1 gallon = 4 quarts; 1 quart = 4 cups)**Question 5**• How many minutes are there in 1 year?**Mr. Astor World Traveler Stations**• Please follow the instructions on the handout and travel to each station accordingly.**USA South Africa Zambia**• Finish the Journey to at least Zambia before the bells rings.**Wanna Travel the World?**• If the whole class finishes the required stations, Mr. Astor will show you the rest of the pictures.**Exit Slip**• You have 42 dollars. You know the following conversions: £ 1 pound = $1.62 £ 1 pound = € 1.25 Euro How many Euros do you have?**Closing Time**• Homework 3.3 Conversion Factors due Monday/Tuesday