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Ms. Halstead from San Bruno CA is requesting Supplies through DonorsChoose, the #1 classroom funding site for teachers.

Compasses

The cost of these 200 compasses is $559, including shipping and <a target="new" href="http://www.donorschoose.org/html/fulfillment.htm" onclick="g_openWindow('http://www.donorschoose.org/html/fulfillment.htm', 300, 800, 'fulfillwindow');return false;">fulfillment</a>.

  • $582 goal

Hooray! This project is fully funded

Hooray! This project is fully funded

Long before there were computers and calculators, mathematicians were able to construct a perfect right angle with only a compass and a straight edge. As part of our geometry class, we have the students redo these constructions so they get a sense of how ancient mathematicians practiced their discipline. Constructions are a tactile way of learning deductive logic, and an excellent way to hook our more kinesthetic learners. The geometry teachers have sprinkled constructions throughout the year. Unfortunately, this means the students need to carry compasses in their backpacks for one day a month. The compasses often break, and with their sharp points, sometimes poke holes in things. Ideally, each geometry teacher would have a class set of compasses and the students could keep their own at home for homework. Thank you very much.

Ms. Halstead
Grades 9-12
More than a third of students from low‑income households

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2 donors2 donors have given to this project.

This project will reach 200 students.

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Where Your Donation Goes

Materials Cost Quantity Total
COMPASS CIRCLE MASTER NEON • Nasco $1.89 200 $378.00

Materials cost

$378.00

Vendor shipping charges

FREE

State sales tax

3rd party payment processing fee

Fulfillment labor & materials

Total project cost

$476.63

Suggested donation to help DonorsChoose reach more classrooms

$104.63

Total project goal

$581.26

How we calculate what's needed

Total project goal

$581.26

2 Donors

-$500.79

Donations toward project cost

-$477.00

Donations to help DonorsChoose reach more classrooms

-$23.79

Excluded support for DonorsChoose

-$80.92

Still needed View calculationHide calculation

$0.00

Our team works hard to negotiate the best pricing and selections available.

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Project Activity

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