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Understanding Unit Conversion in Measurement: Methods and Applications

This lesson focuses on the concept of unit conversion in measurements, exploring how two different units can represent the same quantity. Students will engage with examples from real-world contexts, such as money, cooking, and construction, to identify and apply conversion factors. With an emphasis on dimensional analysis and practical applications, students will learn two primary methods for converting between units: the divide/multiply method and the decimal method. By the end of the lesson, students will demonstrate their understanding through an exit slip.

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Understanding Unit Conversion in Measurement: Methods and Applications

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  1. Unit 2: Chemathematics 2.3 Aim: How can two units of measurement be equal to each other? AGENDA Do Now Introduction Mini-Lesson Summary Work Period Exit Slip Objective: I will identify the conversion factor between units Do Now: (You have 5 minutes) On Do Now slip:

  2. Unit 2: Chemathematics 2.3 Aim: How can two units of measurement be equal to each other? AGENDA Introduction Mini-Lesson Summary Do Now Work Period Exit Slip Real-world connection Money, Cooking, Building Vocabulary Conversion * Dimension * Dimensional analysis * Base

  3. Unit 2: Chemathematics 2.3 Aim: How can two units of measurement be equal to each other? AGENDA Introduction Mini-Lesson Summary Do Now Work Period Exit Slip DO NOW

  4. Unit 2: Chemathematics 2.3 Aim: How can two units of measurement be equal to each other? AGENDA Introduction Mini-Lesson Summary Do Now Work Period Exit Slip Announcements Quiz #3 will be tomorrow on this packet Packet is due Monday Bring $7 for lab notebook Notebook pre-lab due Friday

  5. Unit 2: Chemathematics 2.3 Aim: How can two units of measurement be equal to each other? • CONVERSION/DIMENSIONS • Quantities can be expressed in many ways. •   For example, $1 = ______ quarters = ________ dimes = _______ nickels • Whenever two measurements are equal to each other, a ratio of the two conversions will cancel out to equal 1 (one). Work Period Summary Mini-Lesson Exit Slip Do Now Introduction

  6. Unit 2: Chemathematics 2.3 Aim: How can two units of measurement be equal to each other? Work Period Summary Mini-Lesson Exit Slip Do Now Introduction

  7. Unit 2: Chemathematics 2.3 Aim: How can two units of measurement be equal to each other? • Think about it… • When do we use dimensional analysis? • Scenario: Suppose someone said you ran for 3600 seconds. How would you respond? Do you know how many minutes or hours 3,600 seconds really is? • What would you do to solve this? Work Period Summary Mini-Lesson Exit Slip Do Now Introduction

  8. Unit 2: Chemathematics 2.3 Aim: How can two units of measurement be equal to each other? • How do we convert from one unit to another? • There are different methods to convert: • Moving decimal • Divide/multiply • Conversion factor • NOTE: We will use the decimal and divide/multiply method for now. Work Period Summary Mini-Lesson Exit Slip Do Now Introduction

  9. Unit 2: Chemathematics 2.3 Aim: How can two units of measurement be equal to each other? Work Period Summary Mini-Lesson Exit Slip Do Now Introduction

  10. Unit 2: Chemathematics 2.3 Aim: How can two units of measurement be equal to each other? • Other base words include: • Liter • Gram • Seconds • (A prefix comes before a base word. The SI prefixes come before the base units.) Work Period Summary Mini-Lesson Exit Slip Do Now Introduction

  11. Unit 2: Chemathematics 2.3 Aim: How can two units of measurement be equal to each other? • To remember the order of major prefixes: • (large) King Barely Drinks Chocolate Milk (small) • King – Kilo = 1000 base • Barely – Base(meter or gram or Liter or second…) • Drinks – Deci = 1/10 base • Chocolate – Centi = 1/100 base • Milk – Milli = 1/1000 base • (*Replace “base” with either gram, meter, Liter, or second) Work Period Summary Mini-Lesson Exit Slip Do Now Introduction

  12. Unit 2: Chemathematics 2.3 Aim: How can two units of measurement be equal to each other? • SAMPLE QUESTION #1 • Diana drank 0.67 liters of her soda? How many milliliters did she drink? • Divide/Multiply Way • Decimal Way Work Period Summary Mini-Lesson Exit Slip Do Now Introduction

  13. Unit 2: Chemathematics 2.3 Aim: How can two units of measurement be equal to each other? • SAMPLE QUESTION #2 (Regents) • How many joules are equivalent to 35 kilojoules? • 0.035 joules • 0.0035 joules • 3500 joules • 35000 joules • Divide/Multiply Way • Decimal Way Work Period Summary Mini-Lesson Exit Slip Do Now Introduction

  14. Unit 2: Chemathematics 2.3 Aim: How can two units of measurement be equal to each other? Summary Summary: Explain two methods we commonly use to convert units. Work Period Summary Exit Slip Mini Lesson Introduction Do Now

  15. Unit 2: Chemathematics 2.3 Aim: How can two units of measurement be equal to each other? Work Period Exit Slip Introduction Do Now Mini-Lesson Summary

  16. Unit 2: Chemathematics 2.3 Aim: How can two units of measurement be equal to each other? Work period SHOW WORK FOR RECIPE HERE: Question #1: .120 kg of flour = __________________________ Divide/Multiply Way Decimal Way Work Period Exit Slip Introduction Do Now Mini-Lesson Summary

  17. Unit 2: Chemathematics 2.3 Aim: How can two units of measurement be equal to each other? HOMEWORK: Complete rest of 2.3 for homework Work Period Exit Slip Introduction Do Now Mini-Lesson Summary

  18. Unit 2: Chemathematics 2.3 Aim: How can two units of measurement be equal to each other? Exit Slip Make sure you get your trackers checked! Exit Slip Introduction Do Now Mini-Lesson Summary Work Period

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