by Jen Donaldson
In my classroom, I’ve devised two new uses for Growing Spheres which help students have a better grasp on some otherwise complicated science concepts.
These small spheres are a wonderful way to make the invisible VISIBLE—in three dimensions!
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Chemistry, College level, Elementary level, experiments, High School level, Middle School level | Tagged: Chemistry, Educational Innovations, experiments, fun experiments, growing spheres, hands-on activity, homeschool, parent friendly, PBL, phenomenon based learning, Physics, science, variables | 
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Posted by Donna Giachetti
by Gabrielle Hodgins and Dr. Kenneth Lyle, Duke University, Durham NC
Demonstrating the magnetic ink used in printing US currency has proven to engage audiences of all ages because of its relevance to everyday life. Nearly everyone has used machines that distribute and/or accept currency but few understand how the machines distinguish between the various denominations. The key is in the face of each denomination. Magnetic ink is used in the printing of the currency. Each denomination has a different face and, therefore, a different magnetic signature. Similar to a bar code reader, the machines recognize the denomination by its magnetic signature. A strong magnet, such as a neodymium magnet, can be used to demonstrate the magnetic character of US currency.
Leave a Comment » | Chemistry, Elementary level, High School level, magnetism, Middle School level | Tagged: DIY, Educational Innovations, fun experiments, hands-on activity, homeschool, neodymium magnet, PBL, phenomenon based learning, phenomenon-based science, Physics, science, science fair project | Permalink
Posted by Donna Giachetti
