Showing posts with label math. Show all posts
Showing posts with label math. Show all posts

Monday, January 14, 2013

Multicultural Stories: 1001 Inventions at Nat Geo

An important job we have as educators/parents is to help children get as wide a view of the world as possible to balance our natural ethnocentrism. Here in Lynchburg, VA I have been very impressed with Randolph College's commitment to "cultivating a global perspective in a liberal arts setting".  Randolph currently has an initiative to move from tolerance for diversity to "intercultural competence". These are exciting and worthy goals for any institution. Museums can and do play a major role in introducing cultural assets and explaining their significance.
   
Foundation for Science, Technology and Civilisation (FSTC), a British non-profit educational organization has created the exhibition 1001 Inventions to this end. The exhibit introduces the Golden Age of Muslim Civilization, highlighting the groundbreaking scientific and cultural achievements of the the 7th to 17th century in the Muslim world.  1001 Inventions is currently (until February 3, 2013) on view at the Washington, DC headquarters of the National Geographic.   The exhibit is geared toward children but engages all ages.


One of the most interesting objects in the exhibit is a large reproduction of the automatic clock designed by Al-Jazari 800 years ago.  Al-Jazari was an inventor, engineer, mathematician, artist and scholar. His work, including this clock were instrumental is setting the stage for both modern automation and robotics  He is best know for The Book of Knowledge of Ingenious Mechanical Devices published in 1206.  In it he describes 100 mechanical devices and provides blue prints for their construction.

Al-Jazari's clock is run by water in an elaborate series of mechanisms that function inside and outside of the elephant. This video animates the workings of the clock.  This monumental clock is 20 feet tall. 



One of the most interactive components and one kids particularly enjoyed was a projection on a large wall. The projected image featured Abbas Ibn Firnas. Firnas is attributed to be the first man to make a scientific attempt at flying. Firnas is shown with his winged invention jumping from a tower and in "flight".  The viewer standing in front of the wall powers Firnas's flight by flapping their arms. An animated replica of the viewers motion is also projected on the wall. The longer and stronger the flapping, the more yards Firnas flies. 

I learned lots of interesting factoids.  Cat gut was first used in surgery during this time and it is still used today.  Fatima Al-Fihri founded the world’s first modern university in 859 CE.  It is still in operation today. A Muslim scientist Alhazen is considered the first to come up with a scientific description of a camera obscura or room sized pin hole camera. Knowledge of various architectural features such as arches were brought back to Europe from the Crusades. One display suggested that the shape of the Arabic numerals were devised to correspond to the appropriate number of angles, ie one had one angle in the symbol that represents one, two had two angles etc.

This pdf for middle school students is a worksheet for students to fill out at the exhibit. It provides an overview of the range of topics addressed in this stimulating, informative experience. 1001 Inventions has traveled to numerous locations around the world including the California Science Center in Los Angeles, the New York Hall of Science, the London Science Museum and the Sultanahmet Square in Istanbul.

Wednesday, May 30, 2012

Book Review: Seeing Symmetry


Seeing Symmetry
Loreen Leedy
Holiday House


This book for kids 4 to 8 years old is about the overlapping of art, science and math through the lens of symmetry. 



I recommend this book because:

1. it helps kids “see” what is going on around them and how interrelated life forms are to each other

2. it explains some of the reasons why organisms evolved in certain ways, i.e. symmetry facilitates motion

3. it demonstrates that math and science can be introduced to young children through art

4. it starts a conversation about looking carefully at what populates our world

5. it helps kids build skill and confidence in identifying a particular phenomenon

 Kristin Reiber Harris, Sea Fantasy #6, graphite on paper, 1972


Radial symmetry has been an interest of mine since the 70’s with my introduction to Islamic art.  Seeing Symmetry, written and illustrated by Loreen Leedy is the first book I have found that introduces the concept of symmetry to young children.

Kristin Reiber Harris, Dogwood Stone Circle, 42" x 53", mixed media on paper

Symmetry is all around us.  If one half of an object exactly mirrors the other half, it is symmetrical.  What a wonderful conversation to have with a young child.  Let’s find examples of symmetry right here, right now.

Many animals’ bodies are symmetrical. Even animals as diverse as scallops and whales have being symmetrical in common.  Numerous animals are illustrated in full color and as a simple silhouette. A line drawn down the middle of the silhouetted shape demonstrates the symmetry.  It gets even more fun when you can discuss with your child that our bodies are symmetrical too.  But why?  Animals and humans use symmetrical body parts to facilitate movement; i.e. crawling, walking, flying and swimming.

Even letter forms can be symmetrical (depending on the typeface), some vertically others horizontally. Even words can be symmetrical; mom, wow and aha.  Other words can be symmetrical either horizontally or vertically like hid or cookie (again depending on the typeface).

For me the most visually exciting kind of symmetry is radial symmetry.  Flowers and snowflakes come to mind immediately.

Beyond looking at the symmetry all around us, Leedy suggests that symmetry is of additional significance because it is an important concept in mathematics.  Mathematics is more than numbers; it is also a study of patterns, order and comparisons.

The scientific discussion of animals and machines symmetrical attributes is followed with many examples of symmetry in fine art, architecture, folk art even furniture.  A few art projects are included at the end of the book along with a glossary.


Seeing Symmetry
Loreen Leedy
Holiday House
©2012
978-0-8234-2360-6