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This teacher needs your help!

Ms. Ratz from Brooklyn, NY is requesting lab equipment through DonorsChoose, the most trusted classroom funding site for teachers.

See what Ms. Ratz is requesting

Measuring Rates of Photosynthesis and Respiration- It's a Gas!

Help me give my students oxygen and carbon dioxide gas sensors to help them investigate photosynthesis and cellular respiration, two topics important for the IB Biology curriculum.

  • $2,932 goal

Hooray! This project is fully funded

Hooray! This project is fully funded

Keep the momentum going! Make a donation to Ms. Ratz for her next project!

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Keep the momentum going! Make a donation to Ms. Ratz for her next project!

My Project

Cell respiration and photosynthesis are the fundamental processes of life! Plants and other photosynthetic organisms use the sun's energy to convert carbon dioxide into glucose, releasing oxygen as a waste product. All living organisms perform cell respiration, which converts glucose into usable energy and produces carbon dioxide as a waste product. CO2 and O2 gas sensors allow students to directly observe and measure the rates of these processes in real-time. 

Having multiple types of sensors allows our students to pool their data to make more meaningful analysis in a limited amount of time.

It also gives students more flexibility in designing their IB Internal Assessment, and independent laboratory investigation.

Ms. Ratz Brooklyn Latin High School Grades 9-12

More about Ms. Ratz

Brooklyn, NY View local requests

More than half 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

600 students impacted 21donors

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Expand the "Where your donation goes" section below to see exactly what Ms. Ratz is requesting.

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Where Your Donation Goes

Where your donation goes
Materials Cost Quantity Total
Go Direct CO2 Gas Sensor • Carolina Biological Supply Company $225.01 5 $1,125.05
Go Direct O2 Gas Sensor • Carolina Biological Supply Company $205.01 5 $1,025.05

Materials cost

$2,150.10

Vendor shipping charges

 $279.51

Sales tax

 $0.00

3rd party payment processing fee

$32.25

Fulfillment labor & materials

$30.00

Total project cost

$2,491.86

Suggested donation to help DonorsChoose reach more classrooms

$439.74

Total project goal

$2,931.60

How we calculate what's needed

Total project goal

 $2,931.60

19 Donors

-$1,468.48

Donations toward project cost

-$1,302.31

Donations to help DonorsChoose reach more classrooms

-$166.17

match offer

-$1,399.47

Match offer toward project cost

-$1,189.55

Match offer to help DonorsChoose reach more classrooms

-$209.92

Excluded support for DonorsChoose

-$63.65

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 Ms. Ratz and reviewed by the DonorsChoose team.

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