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This teacher needs your help!

Mrs. Calhoun from South Bend, IN is requesting lab equipment through DonorsChoose, the most trusted classroom funding site for teachers.

See what Mrs. Calhoun is requesting

Breathing Easy: Helping Us Understand the Respiratory System

Help me give my students lung models and pulse oximeters to better understand how the respiratory system functions.

  • $278 goal

Hooray! This project is fully funded

Hooray! This project is fully funded

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Keep the momentum going! Make a donation to Mrs. Calhoun for her next project!

My Project

My Anatomy & Physiology students need lung models to help them understand the function of the diaphragm and pressure changes in driving respiration. These lung models will allow my students to see that when the diaphragm contracts there is more room for the lungs and a decrease in air pressure that causes lungs to inhale. They will also allow them to see that when the diaphragm relaxes, the space for the lungs decreases and forces them to exhale.

The pulse oximeters will allow my students to see how saturated their own blood is with oxygen.

These simple devices use red light to calculate how many of their hemoglobin molecules are saturated. Because they are so small and easy to use, students will be able to test their oxygen saturation under a variety of conditions and understand how oxygen saturation impacts their overall health.

The colored pencils and pencil boxes will help my students to identify the structures that make up the respiratory system and many of the other body systems that we cover over the course of the year in Anatomy & Physiology.

Mrs. Calhoun Washington High School Grades 9-12

Equity Focus

This project directly supports students at a historically underfunded school. Learn more about our Equity Focus.

This project will directly impact historically underfunded classrooms.

More about Mrs. Calhoun

South Bend, IN View local requests

More than three‑quarters of students from low‑income households Data about students' economic need comes from the National Center for Education Statistics, via our partners at MDR Education. Learn more

44 students impacted 6donors

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Where Your Donation Goes

Where your donation goes
Materials Cost Quantity Total
Miniature Lung Function Model • Carolina Biological Supply Company $24.26 4 $97.04
CONTEC CMS50NA Pulse Oximeter SpO2 and PR Value Waveform Blood Oxygen Neck/Wrist Corda • Amazon Business $9.89 4 $39.56
Crayola Colored Pencils - Assorted Colors, Set of 36 • Blick Art Materials $7.58 4 $30.32
Advantus Super Stacker Stackable Pencil Box - Plastic - Clear • Staples $3.33 4 $13.32

Materials cost

$180.24

Vendor shipping charges

 $22.57

Sales tax

 $0.00

3rd party payment processing fee

$2.70

Fulfillment labor & materials

$30.00

Total project cost

$235.51

Suggested donation to help DonorsChoose reach more classrooms

$41.56

Total project goal

$277.07

How we calculate what's needed

Total project goal

 $277.07

1 Donor

-$179.78

Donations toward project cost

-$152.82

Donations to help DonorsChoose reach more classrooms

-$26.96

Matching donations from our partners

-$97.29

Match offers toward project cost

-$82.70

Match offers to help DonorsChoose reach more classrooms

-$14.59

Still needed View calculationHide calculation

 $0.00

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

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As a teacher-founded nonprofit, we're trusted by thousands of teachers and supporters across the country. This classroom request for funding was created by Mrs. Calhoun and reviewed by the DonorsChoose team.

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