4Kids.org
Week of February 7, 2016
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Games Cool Spots Back Issues
Visit the featured websites to find the answers.

What can you do to preserve native bees?
Plant native plant species in your yard.
Plant native species on your rooftop.
All of the above.

How much water is required to grow one pound of sugar?
2,000 pounds
4,000 pounds
6,000 pounds

Who invented the Kaleidoscope?
Albert Einstein
Sir David Brewster
Ben Franklin

Protect the Planet

BeeLearn how everyone can
be involved in protecting the world around us
at Ecology Kids, ecology.com/ecology-kids. In Cool Creatures, read why Bees Are Not Optional! Did you know that Earth’s average temperature is rising? Check out Planet Earth, where NASA Explains Climate Change in “Earth has a Fever.” See how kids around the world are making a difference in Kid Power. Meet fifth-grader Gaby Zane, whose science project on germs and stuffed animals was published in a medical journal.

Play Verb Viper
Verb Viper

Clean Water

BathThose who have access to clean water are very
fortunate. Aqua Venturer, wef.org/flash/aquaventure/
aqua.html
, looks at the history of water and sanitation. Have you ever heard the story of Miracle Water? Travel back to 862 BCE to learn how a British prince discovered the healing springs. Find out how the Perrier brothers began modern water service in Paris in 1778. Did you know that New York was home to a famous sewer detective? Go back to 1910 to see who it was. What are scientists predicting for 2050 CE?


Math Games

Cyberchase KidsPBS Kids presents Cyberchase, pbskids.org/
cyberchase/math-games
, a collection of math games that will give you the practice you need to ace your next math test. Stop That Creature by typing in the math rule that runs the machine. Read the clues to find answers when you play Sleuths on the Loose. Help the movie theater guy Stop the Pop by discovering the codes that turn the machine off before the theater fills up with popcorn. Play Rescue Ecotopia and try to avert potential disaster by adding plants and animals to keep the ecosystem healthy.

Speak Out

What do you do to protect the Earth?

Speak Out Here!

Dear Amy: Why do we have leap years? —Kristin S., Los Angeles, California

Dear Kristin: We have leap years for several reasons. Leap years happen every four years. In those years, February 29 appears on the calendar, causing the year to have 366 days instead of the usual 365.

It takes the Earth 365 days, 5 hours, 48 minutes and 46 seconds to travel around the sun one time. In order for our calendar to stay correct, a day must be added every four years. Leap years function to make the calendar match the Earth’s revolutions around the sun. Otherwise, in just 100 years, the Gregorian calendar that we use today would be incorrect by 24 days.

In order to be a leap year, it must meet specific criteria. First, it must be evenly divisible by 4. Next, if the year can be evenly divided by 100, it must also be divisible by 400. Previously, the Julian calendar was used, and any year divisible by 4 was considered a leap year.

We have since transitioned to the Gregorian Calendar, where the rules described above apply. To learn more, visit Geography for Kids, kidsgeo.com/geography-for-kids/0021B-understanding-time-leap-year.php.

—Amy

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