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Question of the day

Question of the day. What is the scale factor of yards to inches?. Learning goal. Students will be able to compare, contrast, and convert units of measure between different measurement systems (US customary or metric SI), dimensions, and derived units to solve problems. . Level 2.

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Question of the day

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  1. Question of the day • What is the scale factor of yards to inches?

  2. Learning goal • Students will be able to compare, contrast, and convert units of measure between different measurement systems (US customary or metric SI), dimensions, and derived units to solve problems.

  3. Level 2 • Students will: • Identify the appropriate unit of measure for the given object • Identify units (length, mass or capacity/volume) • Identify what is Customary and Metric • Define key terms.

  4. Level 3 • Students will: • Use dimensional analysis to solve problems within same measurement system (Metric or Customary) • Convert between Metric and Customary

  5. Level 4 • Use dimensional analysis between systems to solve real-world problems • Create a word problem involving dimensional analysis between two systems

  6. Key terms • Metric system • US customary system • Volume • Mass • Unit of measure • Conversion factor

  7. Measurements conversion US customary and Metric systems

  8. US customary units

  9. Choose the appropriate customary unit

  10. You try • The weight of a car? • Length of a piece of paper? • How much water in a small pool?

  11. Finding conversion factor • This is the difference between two units of measure. • Example from inches to feet it would be

  12. You try • Conversion factor • Cups to pints • Ounces to pounds

  13. Converting customary units • 1. find the conversion factor between the two you are converting • 2. Create a proportion between the conversion factor and given information • 3. Cross, cross, divide (sing the song if needed)

  14. example • Convert 18 cups to pints. =

  15. You try • Convert 30 inches to feet • Convert 1500 lbs. to tons

  16. Sometimes you will have to do more than one conversion. • Example it you are converting from inches to miles. • Just do one conversion at a time until you reach the correct ending unit

  17. Metric unit of measures

  18. Metric units of measure prefixes

  19. Metric system units

  20. Choose appropriate metric unit • The weight of a car? • Length of a piece of paper? • How much water in a small pool?

  21. Converting between units of Metric • Because the metric system is based on units of ten, we do not need scale factors. • We only need to know how many times we will be diving or multiplying by ten

  22. Example • Example if we are converting between Kilo- and Deca-, that is two steps . • two steps of 10 equal 100, so we multiply 100

  23. example • Covert 4 kilometers to meters • That is 3 jumps • Each jump is 10, so three would be 1000 • 10 x 10 x 10 = 1000 • 4 x 1000= 4000

  24. You try • Convert 20 milligrams to decigrams • Convert 34 hectograms to grams

  25. summary • Describe in words how you would convert inches to miles

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