From: Monya Baker (monya_baker@yahoo.com)
Date: Fri Mar 15 2002 - 12:33:26 PST
Message-ID: <20020315203326.73448.qmail@web21104.mail.yahoo.com> Date: Fri, 15 Mar 2002 12:33:26 -0800 (PST) From: Monya Baker <monya_baker@yahoo.com> Subject: Stream tables
This is not quite stream tables, but this activity uses readily available materials and addresses the idea of stream load quite well.
Have the kids put two hanging folders inside another. (the legal size ones work best, and you only need two). Students should slide out the inner folders until there is about six inches of overlap and tape these together on the inside and on the upper edge. The inside of the folders is the stream bed. Line the inside withtwo layers of aluminum foil. You need two six inch wides strip slightly longer than the stretched out folders. Flip the overhanging part of foil over the edges and tape it down.
Your stream channel should be about two feet long, with hooks on either end. I had students suspend the lower end of their channel over a sink. The other end was hooked onto a ring stand and clamp. The slope needs to be pretty gentle. Originally, I gave kids different particle sizes to put in the upper end stream bed (large and small gravel and sand). Students would pour a given amount of water into the upper end, and then draw/ measure how far different kinds of sediments traveled. (Kids had to figure out the best way to determine this. I.e. did you record the position of the piece of gravel that traveled the furthest? the least? etc. ) After this, kids had to change ONE thing, and see how it affected sediment movement. Most groups just raised the upper end of the channel, but some tried widening it, others tried pouring the water from different heights (you have to make sure they make allowances for the water that travels out the wrong (upper) end of the channel, putting in just one kind of sedimen
t at a time, etc.
The kids need to feel comfortable designing their own data tables for this approach...but the kids were engaged and thoughtful, and most of the folders were even usable afterwards!
Monya
Pinhole Listserv <pinhole@exploratorium.edu> wrote: Pinhole Digest #867 - Thursday, March 14, 2002
Re: stream tables
by "Heidi Marks"
Re: pinhole Re: stream tables
by "Geoff Ruth"
STAR tests
by "Kim Greco"
Re: pinhole I need potassium chlorate asap
by
----------------------------------------------------------------------
Subject: Re: stream tables
From: "Heidi Marks"
Date: Wed, 13 Mar 2002 07:48:26 -0800
HI out there, I would like to do a project with my students using stream
tables., So we can talk about erosions and deposition. I don't know what to
use for the "stream tables". Does anyone have a suggestion, or have any I
could borrow?
Thanks, Heidi
----------------------------------------------------------------------
Subject: Re: pinhole Re: stream tables
From: "Geoff Ruth"
Date: Wed, 13 Mar 2002 07:54:57 -0800
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The USGS teacher/education library in Menlo Park has one that you can
borrow. At least, they did a few years ago.
Their information:
650 329 5026 or 5028, USGS Library on Survey lane off 345
Middlefield Road, Menlo Park (map
http://online.wr.usgs.gov/kiosk/mparea3.html)
>HI out there, I would like to do a project with my students using stream
>tables., So we can talk about erosions and deposition. I don't know what to
>use for the "stream tables". Does anyone have a suggestion, or have any I
>could borrow?
>
>Thanks, Heidi
>
>
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The USGS teacher/education library in Menlo Park has one that you
can borrow. At least, they did a few years ago.
Their
information:
color="#000000">
650
329 5026 or 5028, USGS Library on Survey lane off 345 Middlefield
Road, Menlo Park (map
http://online.wr.usgs.gov/kiosk/mparea3.html)
HI out there, I would like to do a
project with my students using stream
tables., So we can talk about erosions and deposition. I don't
know what to
use for the "stream tables". Does anyone have a
suggestion, or have any I
could borrow?
Thanks, Heidi
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cite
>-------------------------------------------------------------------->-------
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----------------------------------------------------------------------
Subject: STAR tests
From: "Kim Greco"
Date: Wed, 13 Mar 2002 15:04:22 -0800
Does anyone have any great ideas for motivating kids to perform well
on the STAR tests? Our kids do well, but we'd like to provide
something to give them even more incentive. Any ideas? Thanks!!!!
----------------------------------------------------------------------
Subject: Re: pinhole I need potassium chlorate asap
From:
Date: Thu, 14 Mar 2002 00:56:14 EST
Hi Marc,
We have a lot of potassium chlorate at the Drew School at 2901 California St.
is S.F.
If you need some tomorrow I will be there from 9am until about 3 pm. I will
be in room 302. Glad to share some.
Neil Fetter
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