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Measurement Activities

Measurement Activities. Virginia Standards of Learning Grade 4 SOL 4.10 a, b, c. SOL 4.10 a Estimate conversions between U.S. Customary and metric units, using ballpark comparisons: 1 ounce is about 28 grams; A paper clip weighs about 1 gram An ounce is about the weight of 10 pennies

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Measurement Activities

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  1. Measurement Activities Virginia Standards of Learning Grade 4 SOL 4.10 a, b, c

  2. SOL 4.10 a Estimate conversions between U.S. Customary and metric units, using ballpark comparisons: • 1 ounce is about 28 grams; • A paper clip weighs about 1 gram • An ounce is about the weight of 10 pennies • 1 nickel has the mass of about 5 grams; and • 1 kilogram is a little more than 2 pounds.

  3. Note to STUDENTS • Estimating conversions … • Means you will use rounding and number sense to solve measurement problems. • Finding estimates means you don’t need the exact numbers.

  4. Estimate conversions between U.S. Customary and metric units, using ballpark comparisons: • 1 ounce is about 28 grams 4 ounces is about _____ grams Remember you can round 28 to 30. 40 80 120 140

  5. If 1 ounce is about 28 grams… 4 ounces is about _____ grams 40 80 120 140

  6. Estimate conversions between U.S. Customary and metric units, using ballpark comparisons: • 1 ounce is about 28 grams 4 ounces is about _____ grams How can we use the calculator to solve this problem? We could multiply the number of ounces by 30. We could multiply 28 times 4 and see which choice fits. 40 80 120 140

  7. Estimate conversions between U.S. Customary and metric units, using ballpark comparisons: • 1 kilogram is a little more than 2 pounds. 3 kilograms is about _____ pounds 6 9 10 12 You can use a chart to help you.

  8. Estimate conversions between U.S. Customary and metric units, using ballpark comparisons: • 1 kilogram is a little more than 2 pounds. 3 kilograms is about _____ pounds 6 9 10 12

  9. Estimate conversions between U.S. Customary and metric units, using ballpark comparisons: • 1 kilogram is a little more than 2 pounds. 3 kilograms is about _____ pounds How can we use the calculator to solve this problem? We could multiply the number of kilograms by 2. 6 9 10 12

  10. Try these 3 problems… Can you explain in words or show it on paper?

  11. Can you explain in words or prove it on paper? 1 ounce is about 28 grams. An apple that weighs two ounces weighs about 60 grams.

  12. Can you explain in words or prove it on paper? 1 kilogram is a little more than 2 pounds. • A bag of potatoes that weighs • 5 kilograms is around 10 pounds.

  13. Can you explain in words or show it on paper? • 1 nickel has the mass of about 5 grams • 1 ounce is about 28 grams Five nickels weigh a little less than 1 ounce.

  14. Can you explain in words or show it on paper? • 1 nickel has the mass of about 5 grams • 1 ounce is about 28 grams 5 grams 5 grams 5 grams 5 grams 5 grams Five nickels weigh a little less than 1 ounce.

  15. SOL 4.10b • Identify equivalent measurements between units within the U.S. Customary system (ounces and pounds) • and between units within the metric system (grams and kilograms);

  16. Equivalent MeasurementsWEIGHT US Customary System • ounces & pounds Metric • grams & kilograms

  17. Equivalent MeasurementsWEIGHT US Customary System

  18. If you know the number of pounds, multiply by 16 to find the ounces . Use your calculator to complete the chart.

  19. If you know the number of pounds, multiply by 16 to find the ounces .

  20. How would you solve this problem? Melissa’s puppy weighs 3 pounds. What is the puppy’s weight in ounces? Multiply the number of pounds by 16

  21. How would you solve this problem? Melissa’s puppy weighs 3 pounds. What is the puppy’s weight in ounces? 48 ounces

  22. If you know the number of ounces, divide by 16 to find the pounds . Use your calculator to complete the chart.

  23. If you know the number of ounces, divide by 16 to find the pounds .

  24. How would you solve this problem? Our pet Rex weighs 192 ounces. What is his weight in pounds? Divide the # of ounces by 16.

  25. How would you solve this problem? Our pet Rex weighs 192 ounces. What is his weight in pounds? 12 pounds

  26. Equivalent MeasurementsWEIGHT METRIC System

  27. Note to STUDENTS • Sometimes you will be asked to find a fraction of a unit of measure. • Sometimes your answer to measurement problems will be a fraction.

  28. pound is the same as ___ounces 1 4 • There are 16 ounces in a pound. • Place 16 objects on your desk in groups of four—since four is our denominator. To find your answer, you would mark one out of every four ounces-just like the fraction says. That is a total of 4. One fourth of a pound is the same as 4 ounces.

  29. pound is the same as ___ounces 1 2 • There are 16 ounces in a pound. • Place 16 objects on your desk in groups of two—since two is our denominator. To find your answer, you would mark 1 out of every 2 ounces-just like the fraction says. That is a total of 8. One half of a pound is the same as 8 ounces.

  30. pound is the same as ___ounces 7 8 • There are 16 ounces in a pound. • Place 16 objects on your desk in groups of 8—since eight is our denominator. To find your answer, you would mark 7 out of every 8 ounces--just like the fraction says. What is the answer to our problem? 14 ounces

  31. Let’s Solve These Same Problems With a Calculator & Equivalent Fractions

  32. Set up equivalent fractions to see which numerator will give you equivalent cross-products. pound is the same as ___ounces 1 1 ? 4 4 16 • Which numerator will make these cross products equal? • 2 • 3 • 4 • D. 10 = 1 x 16 is the same as ____ x 4?

  33. Set up equivalent fractions to see which numerator will give you equivalent cross-products. pound is the same as ___ounces 1 1 ? 2 2 16 • Which numerator will make these cross products equal? • 5 • 6 • 7 • D. 8 = 1 x 16 is the same as ____ x 2?

  34. Set up equivalent fractions to see which numerator will give you equivalent cross-products. pound is the same as ___ounces 7 7 ? 8 8 16 • Which numerator will make these cross products equal? • 14 • 12 • 11 • D. 10 = 7 x 16 is the same as ____ x 8?

  35. Let’s Solve Some Problems With Calculators & Equivalent Fractions grams & kilograms Metric Units for Weight

  36. 1 Kilogram = 1,000 grams 250 grams is the same as _____ kilograms 1/3 1/4 1/5 1/8 Using the answer choices given, cross multiply to find the Equivalent Fraction 250 1,000

  37. 1 Kilogram = 1,000 grams 900 grams is the same as _____ kilograms 9/10 7/8 3/4 2/3 Using the answer choices given, cross multiply to find the Equivalent Fraction 900 1,000

  38. 1 Kilogram = 1,000 grams 750 grams is the same as _____ kilograms 2/7 7/8 3/4 2/3 Using the answer choices given, cross multiply to find the Equivalent Fraction 750 1,000

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