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Ratios

By Janice VanCleave

A ratio is the  relationship between two amounts.  A ratio can be expressed as a fraction. What comes to mind is icing cupcakes. If I use one cup of vanilla cake icing to ice 4 cupcakes, and one cup of chocolate icing to ice 2 cup cakes, which cup cakes have more icing on them, […]

Filed Under: General Science, Physics

Inertia

By Janice VanCleave

What is the difference between these science terms: inertia, mass, weight? Inertia measures how difficult it is to move an object. Mass measures how much material is in an object. Weight measures the force of gravity acting on an object. Often times referred to how heavy an object is. Problem: Compare Freddie (a small stuffed toy) […]

Filed Under: Chemistry, General Science, Physics

Science Project: Fireflies

By Janice VanCleave

The National Children’s Museum in Washington, DC in collaboration with the Museum of Science in Boston invite kids of all ages to participate in a special science project. Kids are to collect specific data about the  fireflies in their their own backyard.The project launched June 29, 2009 and you may join in anytime. For specifics […]

Filed Under: Biology, Science Projects

Jupiter’s Bruise

By Janice VanCleave

This colorful photo of Jupiter, the fifth planet from the Sun, was taken from the Hubble Telescope. Notice the area on the lower right side of Jupiter. This is where fragments from a comet collided into the giant planet in July 1994. This was a thrilling and a once-in-a-lifetime opportunity for scientist  to watch comet […]

Filed Under: Astronomy

Sparklers

By Janice VanCleave

We in the United States are making preparations for a July 4th celebration. This always brings thoughts of family picnics followed by firework displays. In some areas fireworks are not allowed except by professionals who prepare brilliant, colorful displays. While in other places, even small children are allowed to participate in this pyrotechnic event. If […]

Filed Under: General Science

Celebration Pots

By Janice VanCleave

These kids are decorating clay pots, which will be used to celebrate July 4th. The pots will be filled with soil and instead of holding lit sparklers in their hands, the sparklers will be stuck in the soil inside the pots. The pots can be set at a distance from the kids–not too far and […]

Filed Under: Chemistry

Mnemonics

By Janice VanCleave

The human brain can more easily remember meaningful information. This explains why kids can sing every word of a song they like but have a difficult time learning information for a math or science test. But then there are lots of things we might be interested in and cannot seem to have instant recall on […]

Filed Under: Biology, General Science

Song Birds

By Janice VanCleave

Birds, such as the mockingbird (left)  are born with the ability to sing, but they must learn the songs of their species. If a baby bird is isolated from other birds of its species, it can instinctively sing simple songs, but not the more complex songs of its species. These it must hear and learn. […]

Filed Under: Biology

Body Movement

By Janice VanCleave

Fun and easy Hands-on Muscle activity by Janice VanCleave.

Filed Under: Biology

Butterfly Puddling

By Janice VanCleave

Butterflies use their long feeding tube, called a proboscis, to drink the sweet nectar from flowers. While they get the sugar they need, nectar is lacking in some important nutrients needed for reproduction. For these necessary salts and other nutrients, butterflies, mostly males, sip liquids from mud puddles or any moist area where soil might […]

Filed Under: Biology

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Welcome to Janice’s Science Extravaganza!

The spoon hanging from the string vibrates when struck and these vibrations are transmitted through the string and the sound is amplified by the plastic cups. ABOUT ME: Hi, I am Janice VanCleave, author of 50 best-selling science experiment books for children ages 4 through high school. I taught science for 27 years. MORE.....

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