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Recording Numerical Data by Rachel Koester

Recording Numerical Data by Rachel Koester. Standard 4.2.4 Use numerical data to describe and compare objects and events. (Core Standard). Objectives.

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Recording Numerical Data by Rachel Koester

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  1. Recording Numerical Data by Rachel Koester Standard 4.2.4 Use numerical data to describe and compare objects and events. (Core Standard)

  2. Objectives • The object of this Indicator Project is to enhance your abilities to gather numerical data; as well as develop your understanding of comparing objects and events in numerical data. • You will perform the “Sink It” activity which involves taking objects and recording whether the objects sink or float according to weight and material.

  3. Materials • Bowl of water • Penny • Foil • Marble • Paper clip • Wood log • Paper • Rubber ball • Zebra toy • Worm • Button • Key • Clothes pin • Spoon • Doll • Tweezers • Sink It-Data Table activity sheet. • Recording Data Tables. • Blank piece of paper.

  4. Sink It! • Have you ever dropped a small item in a bowl of water and it sunk? • Maybe you have dropped a larger item in a bowl of water and it floated? • Have you ever wondered why certain items floated in water and why other items sink? • Do you think how much an object weighs has anything to do with it sinking or floating?

  5. Pre-Activity • Put the objects found in the plastic container into categories you feel best affects the objects sinking or floating (color, size, shape, material, etc.) • Write down the name of each object on the • “Sink It” Activity sheet. • Weigh each object in grams and predict whether you think the objects will sink or float. • Write down predictions on the activity sheet as and record the weight in the “Notes” column on activity sheet. • http://www.sciencenetlinks.com/pdfs/sinkit_actsheet.pdf

  6. Recording Data • After you write down your predictions, take each item, place it in the bowl of water and record the results. • Things to think about as you test: • How much water is in the bowl for each item you test? • How are you going to put the item in the bowl of water? Dropping it? If yes, then from how high? • What is your definition of floating? Anything not on the bottom of the bowl? Or does it have to come to the water’s surface?

  7. Reorganize • After testing, reorganize your categories if needed according to results (such as weight, metal, plastic, glass, etc.) • Record your final results in the “Recording Data” tables.

  8. Recording Data

  9. Recording Data

  10. Recording Data

  11. Discussion Questions • Which items did you find to be the most “buoyant?” • Did the materials each object is made of influence if the item floated or sank? • Did the “density” cause the object to float or sink? • Definitions: • buoyant: having buoyancy, capable of floating • Density:thequantity per unit volume, unit area, or unit length: as a: the mass of a substance per unit volume or sphere of.

  12. Reflect • On a piece of paper, write down some of the similarities of each category you created, and write down some of the differences. • Were there any objects that surprised you the most by sinking or floating? • Were there any objects you knew would sink or swim before you tested the them?

  13. Assessment Question • Please write a brief paragraph about why you think a piece of wood floats: • ________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

  14. Sources • http://dc.doe.in.gov/Standards/AcademicStandards/StandardSearch.aspx • http://www.sciencenetlinks.com/lessons.php?DocID=125 • www.m-w.com

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