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Author Spotlight: Ann M. Martin

Author Spotlight: Ann M. Martin

 


Books by Ann M. Martin:

A Corner of the UniverseA Dog's LifeBetter to WishRain ReignTen Rules for Living With My Sister

Websites:


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Women’s History: Artists

Women’s History: Artists

“Stories, both real and imagined, show what girls can do. The stories of women’s lives, and the choices they made, encourage girls to think larger and bolder, and give boys and men a fuller understanding of the female experience.”

~National Women’s History Project


Beatrix Potter and her PaintboxCloth LullabyDorothea's EyesMary CassattPatience WrightSewing StoriesViva FridaThrough Georgia's EyesMy Name is GeorgiaRestless SpiritStand There She ShoutedImogen

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Women’s History: Athletes

Women’s History: Athletes

“Stories, both real and imagined, show what girls can do. The stories of women’s lives, and the choices they made, encourage girls to think larger and bolder, and give boys and men a fuller understanding of the female experience.”

~National Women’s History Project


Books:

Yes She Can SportsDirt on their SkirtsBasketball BellesQueen of the TrackDanica PatrickThe Golden Girls of RioSerena WilliamsWhen Wilma Rudolph Played BasketballThe Kid from Diamond StreetMermaid QueenFearlessTouch the SkyNothing But TroubleAmerica's Champion SwimmerWilma UnlimitedTillie the Terrible Swede

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Author Spotlight: Raina Telgemeier

Author Spotlight: Raina Telgemeier


Books by Raina Telgemeier:

DramaKristy's Great IdeaSistersSmile

Websites:


More about Women’s History:

 

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Newton’s Second Law of Motion

Newton’s Second Law of Motion

Find More Science Experiments

Today’s experiment will demonstrate Newton’s Second Law of Motion.

Newton’s Second Law of Motion: Acceleration is produced when a force acts on a mass. The greater the mass (of the object being accelerated) the greater the amount of force needed (to accelerate the object).

SIMPLY: Pushing or pulling an object produces acceleration, a change in the speed of motion. Believe it or not, an accelertion can be a slowdown OR a speedup. The heavier the object, the more force it takes to make that object speed up or slow down. It takes more of your strength to push a bowling ball one foot than it does to push a marshmallow one foot. In this video, an astronomer demonstrates Newton’s Second Law of Motion. Or read this eBook, a brief introduction to gravity and motion. Physics explains how a roller coaster moves.


Comet Cratering Experiment

This experiment is a demonstration of Newton’s Second Law of Motion

What You Need:srpcometsetup2

  • Pie Pan or Other Dish with Sides
  • Flour
  • Hot Chocolate Mix
  • 3 Sizes of Marbles or Rocks
  • Spoon

Put several spoonfuls of flour in the bottom of the pan and spread it out to make a level surface. Then sprinkle a thin layer of hot chocolate mix on top of the flour. Now hold one marble/rock above the surface of the flour and drop it. Do the same with the other two marbles/rocks. Now carefully lift each marble/rock out of the flour and look at the impact crater. Which marble/rock made the widest impact crater? Which one made the deepest impact crater?


srpcometfloursrpcometchocolatesrpcometthreesrpcometcratersrpcometcompare1

Science Project Idea:

Do this experiment again. Use three different sizes of marbles. Marbles are great for this project because they are round, which makes measuring the size of the impact crater easier. Remember that in a science experiment you want to test only one variable. In this experiment we only want to change the size/weight of the object that is falling. If we changed the shape of the object too, it would be hard to measure the difference in the impact craters.

While doing the experiment, pay close attention to how far away the marbles are from the surface of the flour before you let go of them. Use a ruler to make sure you drop each marble from exactly one foot above the surface of the flour. Do the experiment three times using the same three objects. The three times you repeat the experiment are called trials. Make a chart to keep track of the results. After each trial measure the width of the impact crater made by each of the three marbles. Which marble makes the largest impact crater? Which marble makes the deepest impact crater? Why do you think so?

Websites for Research:


eBooks:

Use your indyPL Library Card number and PIN to check out FREE Online eBooks, eAudiobooks & Story Videos. Click on a book jacket & enter your Library Card number and PIN to borrow. What’s My PIN?
Junk Drawer ScienceScience Stunts Fun Feats of PhysicsWho Was Isaac Newton?Lives of the Scientists


Books:

Can You Feel the Force?Give It a Push Give It a PullIsaac Newton Discoverer of GravityGiants of Science Isaac NewtonIsaac the AlchemistLaws of Motion and Isaac NewtonPhysics Investigate the Mechanics of NatureProfessor Astrocat's Atomic Adventure a Journey Through PhysicsYou Wouldn't Want to be Sir Isaac NewtonIsaac Newton and Physics for Kids
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