We're opening an online store on this website!!! How very convenient, no? Here you can browse and buy eBooks by our iNK authors and watch as our inventory grows over the year. Here's a preview of the areas we have books in:
We are opening on a Saturday so that we can also post the Nonfiction Minutes for the upcoming week. We are beginning with some favorites and one brand-new post by a new iNK member. You can look forward to wowing your students with great writing on subjects that are designed to engage and amaze! We are also launching a BRAND NEW website with simplified navigation, a new look, and links to all our authors and their videoconferencing programs. And don't forget our popular podcasts published on the iTunes Store and KidLit Radio.
iNK Think Tank is the go-to place for the kind of reading that fosters interest, leaning and is also excerpted from our books for the reading passages on the standardized tests. If you want your students to "slay the standardized test dragons," this is your go-to spot. Watch for Vicki Cobb's post on diminishing the fear and power of the tests.
It's summer time and the authors, illustrators are taking a break from daily publishing. We will post an array of 10 Summer Minutes and, of course, you have access to our archives. All free to you. We'll be spending the summer developing our new website and writing more Minutes for next year.
Thank you for being such loyal readers. In the past month, from the middle of June to the middle of May our stats topped the charts!
We hope you'll spread the word to colleagues and friends about our unique contribution to making learning a delight and surprise. It's our aim to introduce you to wonders that you never knew you never knew. Look for our authors in your library for your summer reading.
Make it a wonderful summer!
by David M. Schwartz
the amazing, engaging, math exponent
A light year is not a year that has gone on a diet. It is not a year that’s been trimmed to 300 days. It’s not a year spent under high-wattage lamps. A light year isn’t any kind of year.
A light year is a distance. It is a vast distance; the distance light travels in a year. To appreciate a light year, you have to understand how fast light travels.
The speed of light is truly mind-boggling: 186,000 miles per . . . second. That’s “per second,” not “per hour.” In one tick-tock second, light travels a distance of 186,000 miles. If it could go in circles, it could travel around the earth more than seven times in just one second! But light travels in straight lines, not in circles. Imagine something traveling that fast in a straight line—not for a second, not for a minute, not for an hour, not for a day, but for an entire year. The distance it goes in that year is called a light year.
A light year is a convenient unit of measure when distances are enormous. You could talk about the same distances in miles. It's about 5,878,499,810,000 (5 trillion, 878 billion, 499 million, 810 thousand ) of them. But these measurements are so large that they are unwieldy. It's much easier to just name that enormous distance with two simple words: a "light year."
The star closest to our solar system is Proxima Centauri. Some of the light that leaves Proxima Centauri goes to Earth, cruising along at 186,000 miles per second. At that speed, light takes about 4.2 years to get to Earth from Proxima Centauri So how far away is Proxima Centauri? It is 4.2 light years away.
To give you an idea of how far that is, imagine going to Proxima Centauri in a spaceship traveling at the speed of the space shuttle — about ten miles per second. (That’s much faster than airplanes can fly.) You would get there in about 70,000 years.
Our Sun is much closer than Proxima Centauri. It is 93 million miles away. There is another way to refer to the distance from the earth to the Sun. Light leaving the Sun takes about eight minutes to get to Earth, so we say the Sun is eight “light minutes” away. If you traveled at the speed of light, you could get there in eight minutes. Have a nice trip!
© David M. Schwartz, 2014
David Schwartz has been fascinated by big numbers and big distances ever since he was a little boy riding his bicycle, wondering “How long would it take for me to ride to Proxima Centauri, 4.2 light years away?” He wrote about light years in his math alphabet book G Is for Googol.
David is a member of iNK’s Authors on Call. He can visit in your classroom via interactive video conferencing. Learn more here.
MLA 8 Citation
Schwartz, David M. "What Is a Light Year?" Nonfiction Minute, iNK Think Tank, 14 Sept. 2017, www.nonfictionminute.org/the-nonfiction-minute/what-is-a-light-year.
Nonfiction is the new black
Chances are you are eagerly looking forward to the last day of school and nearly three months of free time.
Chances are also that you heard that this nice long summer vacation is somehow connected to the early years of the country when agriculture was the most important industry and kids had to help out on their farms during this time. If so, you heard wrong.
For starters, there wasn’t much to do on farms in the summer. The busy times were spring (planting) and fall (harvesting). As a result, most farm kids went to school during the summer and winter. At best they spent a total of six months learning the three Rs.
It was a very different situation in cities as the country became increasingly urbanized. Big-city kids might spend as much as 48 weeks in class, with a week off every 12 weeks. Since attendance wasn’t mandatory, though, they probably only attended school about as much as they do now.
But if so many kids were playing hooky, reformers said, why bother keeping schools open all year? Some doctors backed up the idea of closing for a period of time, saying that keeping kids cooped up for most of the year wasn’t good for their health.
So education officials decided to eliminate the summer quarter. The first reason was that schools were not air conditioned back then and almost unbearable during heat waves. Also, there was also a strong belief that summer was the time when epidemics of serious diseases such as polio got started. Many people thought having so many children packed so close to each other in classrooms helped spread the illnesses. Third, upper-class and middle-class families often took vacations during the hot months.
With increasing mechanization on farms and many farm families moving to the cities, helping with planting and harvesting wasn’t as important. Farm states added those spring and fall months to the school year and gave kids the summers off, just like big-city folk.
However, some research suggests that the “summer slide” causes students to lose an average of a month of learning. Students typically don’t do as well on tests in the fall—after the long summer break—than in the spring when they’ve been in school for several months. Most other developed countries spend more time in the classroom and generally do better on standardized testing. As a result of these factors, a few states are considering lengthening the school year from the current 180 days to 200.
What do you think?
Jim Whiting hopes all of you have a wonderful summer and that you can carve out some time to read! Your local library may have some of his books, as well as many by the other wonderful authors who have made the Nonfiction Minute such a great success. And be sure to check out Jim's updated website, www.jimwhiting.com
MLA 8 Citation
Whiting, Jim. "Why Do We Have a School Summer Vacation?" Nonfiction Minute, iNK Think
Tank, 15 June 2018, www.nonfictionminute.org/the-nonfiction-minute/
All of the iNK authors will be working over the summer to create new Minutes for next year. We hope you will become a member of iNK Think Tank. On July 1, 2018, only iNK members will be able to have access to all the Nonfiction Minutes and our archives and the Transfer2Teaching. The public will still be able to see 10 FREE Minutes.
Become a Charger Member of iNK and let us know what else we can offer as our paid membership grows.
celebrating nature, inspiring good writing
This summer, you may be able to observe an amazing event in nature. You can watch a small animal build a structure much bigger than itself, using materials from inside its own body!
This is what happens when a spider spins a web. Inside a spider are glands that can produce seven different kinds of silk. The silk comes out of little spigots, called spinnerets, at the rear of the spider's body.
A strand of spider silk is stronger than a similar strand of steel, and spiders use this amazing material in many ways. If they catch an insect, they may wrap it in silk, to eat later. Female spiders enclose their eggs in a silken sac to protect them. And some spiders—almost always females—make webs that are death traps for insects.
Webs can be in the shape of funnels, sheets, or domes, but the best-known are called orb webs. From an orb web's center, lines of silk radiate out in all directions, like the spokes of a bicycle wheel. After building this basic structure, a spider goes round and round, laying down ever-bigger circles of silk. Some of the silk threads have sticky glue to catch a moth or other prey. A spider can create this whole complex design in an hour or less.
When an orb web is complete, some kinds of spiders wait right in the center. Others hide at an edge. Either way, the builder keeps a front leg in touch with the web. Vibrations from the threads tell a spider whether prey has been caught.
Spiders often have to repair their webs, and some species routinely build a new one every day. And they recycle! They eat most of their old web. After digestion, it becomes brand new silk for the next construction job.
You may be able to watch a spider on the job. Look for webs in a field, park, or backyard. Also look for webs near doors, windows, or on a porch. The nighttime lights from such places attract night-flying insects, and spiders often build webs there. They may or may not be orb webs, but watching any kind of spider at work on its silken insect-trap can be fascinating fun.
And remember: the spider wants nothing to do with you. It is just trying to stay safe and catch some food.
This video was shot by Ingrid Taylor, " I shot this a few minutes after the rain subsided, when the City of Spiders outside the door came to life. Mass web-building and repair going on..." wikimedia commons
.To learn more about the lives of spiders, and see spectacular realistic illustrations, see Laurence Pringle's book:
MLA 8 Citation
Pringle, Laurence. "Watch a Webmaster at Work!" Nonfiction Minute, iNK Think
Tank, 14 June 2018, www.nonfictionminute.org/the-nonfiction-minute/