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Lesson Plans

RE: compasses.....

[ Thread ][ Subject ][ Author ][ Date ]
Sears, Ellen (
Thu, 21 Jan 1999 12:45:06 -0500

Another type of compass is a goniometer - based on a device used by
orthopedic surgeons to measure flexibility. Goniometers can be used as a
compass and as a protractor. When opened they look like a plastic ruler
with a hinge. Holes at intervals are for pencil points. Plastic, cheap. I
saw one packaged as a Crayola compass at Target this summer. You may find
it listed in math supply catalogs. Otherwise, very easy to use.
Looks like the Safe-T pro ruler in catalogs, but works like the mmArc
Compass Plus in the Sax catalog.

> ----------
> From:
> Sent: Thursday, January 21, 1999 12:35 AM
> To:
> Subject: compasses.....
> ..........The 5th grade
> >might end up doing something like this too if they get too frustrated
> with the
> >compasses. By the way, if anyone knows how to tighten up loose
> compasses, let
> >me know.
> >Good luck, Susan in Michigan.
> ***********
> Hi, Susan...and anyone else who might be using those frustrating little
> metal compasses. Pay the $$$ and get yourself a "good" set of master
> compasses from NASCO which will last FOREVER. They run about $1.85 or so
> each and if you order 36 at once, they're cheaper. I've had the same set
> for almost 9 yrs. now. I made a compass-holder out of a block of wood from
> the woodshop room. It has 72 holes to fit the compasses in. I can see at a
> glance if they are all there before the students leave. Master compasses
> are the only kind of compasses which allows you to put an overhead pen in
> it, an exacto knive, or markers also. It will allow you to use other-size
> tools.
> Toodles........
> Bunki Kramer - Los Cerros Middle School
> 968 Blemer Rd., Danville, California 94526