Category Archives: STEM

Pi Day!

Happy Pi Day from all of us at the Bartlett Public Library! We celebrate today as Pi day since the pidate, March 14th, is the same as the first three digits of π (3.14).

You can learn more about the mathematical concept of Pi in Why Pi? by Johnny Ball, in our juvenile nonfiction section at j530.8 BALL.

You can celebrate Pi Day with challenges from NASA scientists and engineers as part of their Pi Day Challenge! Good luck!

On This Day: March 10th

alexander-graham-bellOn this day March 10th in 1876, the very first understandable speech was transmitted over the telephone. Alexander Graham Bell spoke through the telephone and told his assistant, “Mr. Watson, come here. I want you.” Just three days before this, on March 7th, Bell had received a patent for his telephone system. In 1877, Bell would found the Bell Telephone Company, a company that would later be bought by the American Telephone and Telegraph Company (AT&T). You can read more about Bell and his invention of the telephone by clicking on the link: http://www.history.com/this-day-in-history/speech-transmitted-by-telephone. You can also borrow books about Alexander Graham Bell or the telephone.

“Alexander Graham Bell” by City of Boston Archives is licensed under CC BY 2.0

Earth Science with Edna

This is our new friend, Edna.

edna

Her hobbies include reading, exploring, and watching the latest Disney movie with a big bucket of popcorn.  Her most favorite activity is learning about science and experimenting with ideas.

Edna’s latest area of interest is gardening.  She loves the smell of flowers and enjoys eating lots of different fruits and vegetables- except for Lima beans!  She would really like to have her own garden, but she’s not very good at keeping even a cactus alive!

edna-sad-cactus
Edna’s not-so-healthy cactus

Lately, she has been reading about a different way of growing plants called, hydroponics.  Hydroponics is a way of growing plants without soil.  How can this be?  Edna always thought that soil was needed to make plants grow!  Technically plants need soil for its nutrients and as support system for its roots to hang on to. SO…if you put the nutrients that the plant needs right into the water and if you have something to support the plant and its roots, the plant won’t need the soil.  It’s very scientific and Edna needs to do some more research.

Watch this fun video to learn more!

(Still) Going Green

March is a great month for scientists,gardeners, environmentalists, and curious minds alike.  The weather is changing, the birds are back, and plants are growing (or not growing).  Maybe seeing the bushes start to bud has got you thinking ahead to your summer garden.  

 


Not a gardener?  Well do you like to be green? Do you chant, “Reduce, Reuse, Recycle,” every chance you get?  Do you like trying experiments you see online?  If you said “Yes!” to any of those questions, then I have got a cool experiment to share with you! 

Did you know…   

There are some vegetables you can regrow from scraps?! 

 

Weird, right?  Well take a look

You can regrow…

 green onions      sweet potatos 


and even pineapple!

Click the photo to see more!