You're on track to get doubled donations (and unlock a reward for the colleague who referred you). Keep up the great work!
Take credit for your charitable giving! Check out your tax receipts

In a rush to make a major tax-deductible gift before the year's end? Purchase account credits and choose projects later!

Time is running out! Make your tax-deductible gift before midnight on December 31.

To use your $50 gift card credits, find a project to fund and we'll automatically apply your credits at checkout. Find a classroom project
Are you a public school teacher in need of funding? Get funded »
Menu
Skip to main content

We're a charity that makes it easy for anyone to help a classroom in need. Your gift is tax-deductible.

Your school email address was successfully verified.

 
See this teacher's page

Mrs. Dahl from Erie PA is requesting Educational Kits & Games through DonorsChoose, the #1 classroom funding site for teachers.

Ring My Bell: A Compound Machine Design Challenge!

Help me give my students an opportunity to engineer their very own Rube Goldberg bell ringing machines. Students will use the building blocks, marbles. steel balls and dominoes to design, build, and test compound machines.

  • $175 goal

This project expired on March 13, 2019.

Hooray! This project is fully funded

My Students

My students are eager, urban middle school STEM students. I teach in a very diverse school with students who are very passionate about STEM education. The students in my STEM classes are creative and hard working. Most of the students in my classes will be first generation college students and many plan to pursue careers in STEM fields, many of who aspire to be engineers. STEM resources are essential to enhancing these students’ curiosity and creativity. Providing hands-on classroom experiences gives my students the skills needed to be the best in their classes moving forward to high school, college, and beyond.

My Project

The dominoes, building blocks and marbles will provide a hands on opportunity for my students to explore the benefit simple machines provides. Students will work through the engineering design process to construct a successful bell ringing machine that works consistently and can run longer than the other machines in class. The marbles will be used to transfer energy between machines such as an inclined plane and a lever. The dominoes will act as levers lengthening the complexity and time of their Rube Goldberg bell ringing devices.

These materials will benefit 6 classes a year and will be reusable and allow students to expand on their design ideas.

Mrs. Dahl
Grades 6-8
Nearly all students from low‑income households

Boost your odds

Add a profile photo in addition to your classroom photo. If you add a photo, it'll show up right here on your project page.

You are more likely to receive funding if you put a face to your name.

Upload a photo

5 donors5 donors have given to this project.

This project will reach 200 students.

Top rated for efficiency and transparency.

You donate directly to the teacher or project you care about and see where every dollar you give goes.

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

See our finances

Where Your Donation Goes

Materials Cost Quantity Total
Lewo 1000 Pcs Wooden Dominoes Set for Kids Building Blocks Racing Tile Games with Storage Bag • Amazon Business $39.99 1 $39.99
Toyssa 102 Pieces Building Blocks Stacking Game Wooden Construction Toys Building Planks Set for 3 4 5 6 Year Old Kids Children Boys and Girls • Amazon Business $16.99 2 $33.98
Four Brothers Spacerail Replacement Steel Balls (Pack of 20) • Amazon Business $8.99 2 $17.98
LiCB 20 Pack LR1130 AG10 Battery 1.5V Alkaline Button Cell Batteries for Watch • Amazon Business $6.99 2 $13.98
Fun Central BC811, 200 Pcs 0.65 inches Glass Marbles, Fun Marble Toys, Entertainment Games, Novelty Toys, Bulk Marble Games - 2 Packs 100 Pcs • Amazon Business $10.49 1 $10.49

Materials cost

$116.42

Vendor shipping charges

FREE

State sales tax

$0.00

3rd party payment processing fee

$1.75

Fulfillment labor & materials

$30.00

Total project cost

$148.17

Suggested donation to help DonorsChoose reach more classrooms

$26.15

Total project goal

$174.32

How we calculate what's needed

Total project goal

$174.32

5 Donors

-$170.79

Donations toward project cost

-$148.17

Donations to help DonorsChoose reach more classrooms

-$22.62

Excluded support for DonorsChoose

-$3.53

Still needed View calculationHide calculation

$0.00

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

View complete list Show less

Project Activity

{"pmaHash":"","schoolCity":"Erie","showProjectRecommendations":true,"teachersOnPage":[795527],"isTeacherViewingTheirOwnProject":false,"schoolState":"PA","teacherPossessivePronoun":"her","PMsManager":null,"schoolGradeType":{"id":3,"name":"Middle School"},"TeacherPMForms":{},"applePayMerchantID":"merchant.com.donorschoose1.prod","proposalId":3765936,"proposalMessageFormModel":null,"numActiveProjects":0,"completingDonationAmount":0,"teacherHasClassroomPhoto":true,"proposalURL":"https://www.donorschoose.org/project/ring-my-bell-a-compound-machine-design/3765936/","verifyShowPhotos":"","numStudents":200,"teacherScreenName":"Mrs. Dahl","authorIds":{"795527":{"owner":"Mrs. Dahl","donationSalutations":{}}},"displayedPercentFunded":1.0,"proposalsOnPage":[3765936],"proposalHash":"1887571831","isApplePayMobileOnly":true,"progressBarPercentage":100.00,"pmaId":"","teacherProfilePhotoURL":"https://storage.donorschoose.net/dc_prod/images/teacher/profile/272x272/tp795527_272x272.png?width=136&height=136&fit=bounds&auto=webp&t=1461163285502","teacherHasProfilePhoto":true,"currentWorkflowStatusCode":21,"teacherChallengeId":153502,"photosPublished":false,"queryString":"","DonorPMForm":null,"isApplePayEnabled":true,"fundedByTarget":false,"activeProject":null,"donorIdsForImpactPhotoCheck":[],"teacherId":795527,"schoolCounty":"Erie","fullyFunded":true,"isStudentLed":false,"isExpired":true,"schoolStateObj":{"code":"PA","name":"Pennsylvania"}}