Billions and Billions Finding Time Integrating Math Spreading the Word Star Party
I kept telling students how scientists cannot always use direct measurement (counting the grains
one at a time). Therefore, methods must be used to estimate. To emphasize this, I asked the
students how long would it actually take to count one million, billion or trillion if you counted
one grain of salt each second.
(That is
Using calculators they calculated that
(This allowed them to use the 10^x function on their calculators - not even invented when I was in
high school or college!!)
Some students did not even try. Some started by trying 60*60*24*365. (I am always amazed at how
little some students know about basic conversions.)
MOST WERE VERY SURPRISED BY THESE RESULTS.
This activity also showed that different CORRECT methods can be discovered by scientists (and
students) - not just one right way.
Cathy McQuone
|
Dear Discuss-suners,
I teach high school physics and I have many budding new astronomers just waiting for stuff like
Live from Mars or Live from the Sun to come out. The tight curriculum I have for them in physics
offers no excitement in the way of real-time astronomy. That is something I must furnish and thank
goodness for these Live From... modules. I cannot afford a 4 week piece of time but I can give my
students on day a week for as long as it takes to cover the material, and I have found in the past
that the material is so versatile that I can often refer to it throughout the year once they have
covered a particular unit. I am still using many of the ideas from the Mars curriculum, and I
think this Live from the Sun will have lots of units in it that I can use year after year. I have
to supliment my courses with curriculum like this to keep my students interested and up to date
with what is happening in the news. I like the approach that is made to every new topic and the
versatility that allows a teacher to bring the lesson up to higher grade levels or down to lower
grades.
Just my thoughts. |
Greetings, Tim!
The only thing I could think of to add to your detailed star party outline is a good, focused
flashlight that would allow pointing out constellations and celestial objects - works like a
miniature search light. I've also had turn up at school a consumer model, keychain laser light (I
took it up from a student and really wanted to keep it:-). Maybe this would work even better, I
don't know - I can't justify buying one to try it out.
For those who haven't already bookmarked this site:
http://www.exploratorium.edu/observatory/
Lots of goodies, including calculating relative planet distances and weight on different planets,
and an impressive piece on sunspots - with sound and film clips!
We're getting geared up for LIVE FROM THE SUN!
Roger Stryker
5th Grade
Austin, Texas
|