4Real Forums: manipulatives

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Living and Loving Numbers
4Real Forums : Living and Loving Numbers

Topic: manipulatives

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ALmom
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Joined: May 18 2005
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Posted: April 05 2006 at 7:25pm \| IP Logged

I am using Singapore math and we are going back and doing the measurement units in 2A with metric and English. It's been great - ds is coming up with his own approx. relationships between the two. Only problem : we came to the assignment to find something about 1kg. Well we have 1cm blocks that are 1 g each and we counted out 1000 of them to make something that was exactly 1kg- but it is too large to fit in our bucket of our balance scale. Almost everything heavy enough is too bulky to fit. What did you guys use and how did you measure it? I really want to do this part as it is what makes the concept sink in and ds is having a blast.

There is probably something so obvious and I'm revealing my total lack of creativity

.

Thanks for any ideas.

I did look on the Singapore website and they have the graduated cylinders but nothing for 1kg.

Janet

Leonie
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Joined: Jan 28 2005
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Posted: April 06 2006 at 6:02pm \| IP Logged

A kilogram is about 2.2 pounds - can you find something around the 2 pound mark? Not sure how food, etc is packaged in the U.S. but here in Australia I buy cheese in 1 kg packets ( 2.2 lbs) and cheese is a handy size for weighing on scales.

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Leonie in Sydney
Living Without School

ALmom
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Joined: May 18 2005
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Posted: April 06 2006 at 11:05pm \| IP Logged

Thanks, Leonie:

Only problem is I think our bucket balance doesn't go up to 1 kg. My dh said he will try to make me a balance and then we can use the cm blocks. It seems everything 1 kg is too bulky for our scale - won't stay in the center and topples over. We found some graduated cylinders (kind of expensive) that we can go to next if that doesn't work. Things here are generally marked both ways.

Janet

Jerin's Zoo
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Joined: March 03 2006
Location: Utah
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Posted: April 07 2006 at 11:51am \| IP Logged

now I hppen to have a kitchen scale that does metric and English measurements, so we used that. When my older ds did 2A, we were between homes for 9 mo, and I didn't even have my balance, so we went to the post office during a quiet time and used the postal scale (an interesting experience with 2 and 3 year olds in tow, but my target child got the idea.)

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Jerin
wife to Dan since 1994
mom to ds (6/98 ) , dd (7/99), ds (1/01), dd (2/05) and 16 more
Life at the Zoo

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