4Kids.org - Week of November 12, 2006

Week of November 12 , 2006

Back to Basics

Take a tour of cellular life at www.biology4kids.com/
files/cell_main.html. Discover the differences between animal and plant cells and see what they also have in common in Overview. Click on Next Stop to meet the Nucleus - the cell's brains. Continue your tour and get to know other parts of the cell, including membranes that are pancake-shaped or proteins with bumpy surfaces. In Vacuoles, find out why cells need storage bins to survive and thrive. With this info, you will be a cell wizard in no time!

Nominate a cool Web site at 4Kids.org/nominations

Visit the Featured Web sites to find the answers.

What are cell walls made of?

Cellulose
Protein
Plastic

Who wrote, "NO one knows Geometry, No admission"

Plato
Galileo
Socrates

What holiday would you make a carp banner for?

Girl's Day
Mom's Day
Boy's Day

Math History

Math takes an international adventure at http://library.thinkquest.org
/22584/emh1000.htm. Learn about early mathematics developed in the Orient to help with business growth. In Greece, Pythagoras made an amazing contribution to geometry but he also made interesting musical observations. Did you know algebra began in 16th-century Italy and the metric system was born in 18th-century France? Discover the meaning of topology in present-day mathematics and see how computers revolutionized the math world.

Fancy Folding

Print and fold a zoo of paper creatures at www.tammyyee.com
/origami.html. If you are feeling swimmingly creative, make an ocean diorama with dolphins and whales. Fold your own decorations for almost any holiday, including a turkey and pilgrim's hat for Thanksgiving. For more printable fun, be sure to scroll through the Puzzles and Coloring sections. Ready for a challenge? Follow the link to Merlin's Castle, for instructions on how to build an amazing paper castle, complete with knights and a working drawbridge.

Do you think voting is important? Why or why not?

Speak Out Here!

Dear Amy: Who invented the camera? — Stacy, Oklahoma City

Dear Stacy: In 1826 a Frenchman named Joseph Nicéphore Niepce made the first permanent photograph using a sliding wooden box. This may have been the first photo taken, but the camera itself dates back much further.

During the 11th century, lenses were created to project an object of interest onto a viewing surface, but there was no way to preserve these images apart from drawing them.

In 1685, Johann Zahn invented the first portable camera. Louis Daguerre followed up with a practical photographic method called the daguerreotype in 1835. Later, in 1888, George Eastman invented photographic film and gave birth to the popular Kodak cameras.

Digital cameras became a huge hit in 1990s and are still evolving today. Even cell phones can take pictures to conveniently document memories. For more details, visit www.factmonster.com/
ce6/sci/A0857142.html.

—Amy

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