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Science in Focus: Force and Motion
About the Workshops
1. Making an Impact
2. Drag
Races
3. When Rubber
Meets the Road
5. Keep on
Rolling
6. Force Against Force
7. The Lure of
Magnetism
MouseLab
Questionnaire
Supplemental
Resource List




Channel-Talk

To post a question or reply, you can send an email to channel-talkforce@learner.org.

Re: [Channel-talkforce] mass and volume inquiry

From: Cockroft, Ellafe A. <ecockroft@dadeschools.net>
Date: Mon Mar 13 2006 - 15:11:06 EST

Hi Kristen,
 
Tell them a story about Archimedes and King Midas' golden crown. How he had to weigh the crown of gold and determine if the King's crown maker was substituting inferior metal. After taking a bath, he ran out and shouted "Eureka" as he determined that the bouyant force on a submerged object is equal to the weight of the fluid displaced. This method is normally used these days to determined the volume and therefore the density of an irregular object by measuring the mass in air and it's effective mass when submerged in water. This effective mass when submerged in water is its actual mass minus the mass if the fluid displaced. Mass divided by volume gives a measure of density of the object. Archimedes found that the density of the crown was actually less than gold, so it was "Off with his head!"
 
 
 
 

________________________________

From: channel-talkforce-bounces@learner.org on behalf of Kemp, Mary June
Sent: Mon 3/13/2006 1:39 PM
To: Discussion list for SCIENCE IN FOCUS: FORCE AND MOTION
Subject: Re: [Channel-talkforce] MIAMI-DADE PARTICIPANTS

 
 
Dear Kristen
 
I am ccing Don Deresz who is the mentor for this group--maybe he can respond to this question
 
Thanks for asking.
 
Mary
 

Mary Kemp

WLRN ITV SERVICES

Distance Learning and Community Outreach

7003 SW 4th Street

Miami FL 33144

786-275-0803

786-275-0832 Fax

mkemp@wlrn.org

 

        -----Original Message-----
        From: channel-talkforce-bounces@learner.org [mailto:channel-talkforce-bounces@learner.org] On Behalf Of Levy, Kristen
        Sent: Monday, March 13, 2006 1:35 PM
        To: Discussion list for SCIENCE IN FOCUS: FORCE AND MOTION
        Subject: Re: [Channel-talkforce] MIAMI-DADE PARTICIPANTS
        
        
        Yours is the first email I've received; however, the programs weren't supposed to be viewed until today, so I'm not sure if any emails were sent previously.
         
        One topic I'd like to discuss with other teachers is how to go about having students remember the difference between mass and volume. Do you have any activities or pneumonic devices for teaching mass and volume? How do your students remember the units that mass and volume are measured in?
         
        I normally teach a unit on density, which we spend a lot of time on, before delving into force and gravity. Still, many student struggle with the measurements.
         
        Thank you,
         
        Kristen Levy
        7th Grade Science
        TJMS
        Kristen.Levy@pwssd.k12.wi.us

                -----Original Message-----
                From: channel-talkforce-bounces@learner.org [mailto:channel-talkforce-bounces@learner.org]On Behalf Of Kemp, Mary June
                Sent: Monday, March 13, 2006 11:56 AM
                To: channel-talkforce@learner.org
                Subject: [Channel-talkforce] MIAMI-DADE PARTICIPANTS
                
                
                WELCOME TO THE ANNENBERG WORKSHOP
                 
                My email wasn't working correctly
                 
                Please let me know how you are doing via Channel-talkforce!
                 
                 
                 

                Mary Kemp

                WLRN ITV SERVICES

                Distance Learning and Community Outreach

                7003 SW 4th Street

                Miami FL 33144

                786-275-0803

                786-275-0832 Fax

                mkemp@wlrn.org

                 

                 

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Received on Mon Mar 13 15:45:41 2006

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