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.

 

Mrs. Bertram from Rancho Cordova CA is requesting Supplies through DonorsChoose, the #1 classroom funding site for teachers.

The Ups and Downs of Density

My students are in need of learning the concept of density using materials that will give them consistent and accurate data.

  • $437 goal

Hooray! This project is fully funded

Hooray! This project is fully funded

When attacking ideas and models in chemistry and physics, hands-on/minds-on activities are very important to my 130 8th grade science students. My classes are made up of students ranging from gifted to resource, but they all benefit from experiencing science. Many of my students are from bilingual homes and in the school community about 63% are on the free or reduced lunch program. Being able to do the science and not just read about it or hear about it is important to my students who are often below the reading comprehension level for the text book.

The concept of Density in materials is important for the students to understand. This is not just because of the state standards, but deep understanding of of the ratios of mass to volume is a stepping off point to many other related ideas in chemistry and physics. In the past our Science Department has used various liquids and various blocks of wood cut by the teacher but, the concept of density and various solid materials often eluded the students because there was no way to make the comparison, we just did not have the materials. Many students did not make the connection that density was not just about one material being "heavier" because they did not have the materials to experience the concepts from any other perspective.

To solve this dilemma I would like to have the students experience density from several different perspectives. They need to make comparisons between objects with different mass and different volumes; different mass same volume; different volume with same mass, etc. To be able to do this they will need materials that have these characteristics. The materials that are requested will allow them to make these comparisons with accuracy using various materials that have been selected and standardized to enable the student to visualize and experience the relationships between density, mass and volume.

Through your help, my students will be able to relate the concept of density to more than "heaviness." They will be able to make measurements and comparisons that will help them understand that density is a property that is specific to an element. They will gain a deep understanding about a concept that will help them in the understanding of other concepts later. Your help will help make my students understand density so they can have their own "Eureka" moment!

Mrs. Bertram
Grades 6-8
More than half of 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

2 donors2 donors have given to this project.

This project will reach 280 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. Bertram is requesting.

See our finances

Where Your Donation Goes

Materials Cost Quantity Total
DELUXE DENSITY CUBE SET • Carolina Biological Supply Company $23.36 4 $93.44
EQUAL MASS DENSITY SET • Carolina Biological Supply Company $9.86 5 $49.30
DENSITY CYLINDER SET • Carolina Biological Supply Company $37.76 4 $151.04

Materials cost

$293.78

Vendor shipping charges

$29.38

State sales tax

$21.30

3rd party payment processing fee

$4.41

Fulfillment labor & materials

$9.00

Total project cost

$357.86

Suggested donation to help DonorsChoose reach more classrooms

$78.55

Total project goal

$436.41

How we calculate what's needed

Total project goal

$436.41

1 Donor

-$218.20

Donations toward project cost

-$178.93

Donations to help DonorsChoose reach more classrooms

-$39.27

match offer

-$218.21

Match offer toward project cost

-$178.93

Match offer to help DonorsChoose reach more classrooms

-$39.28

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":"Rancho Cordova","showProjectRecommendations":true,"teachersOnPage":[258426],"isTeacherViewingTheirOwnProject":false,"schoolState":"CA","teacherPossessivePronoun":"her","PMsManager":null,"schoolGradeType":{"id":3,"name":"Middle School"},"TeacherPMForms":{},"applePayMerchantID":"merchant.com.donorschoose1.prod","proposalId":291805,"proposalMessageFormModel":null,"numActiveProjects":0,"completingDonationAmount":0,"teacherHasClassroomPhoto":true,"proposalURL":"https://www.donorschoose.org/project/the-ups-and-downs-of-density/291805/","verifyShowPhotos":"","numStudents":280,"teacherScreenName":"Mrs. Bertram","authorIds":{"258426":{"owner":"Mrs. Bertram","donationSalutations":{}}},"displayedPercentFunded":1.0,"proposalsOnPage":[291805],"proposalHash":"-1817326878","isApplePayMobileOnly":true,"progressBarPercentage":100.00,"pmaId":"","teacherProfilePhotoURL":"https://cdn.donorschoose.net/images/placeholder-avatars/136/teacher-placeholder-4_136.png","teacherHasProfilePhoto":false,"currentWorkflowStatusCode":21,"teacherChallengeId":86422,"photosPublished":true,"queryString":"","DonorPMForm":null,"isApplePayEnabled":true,"fundedByTarget":false,"activeProject":null,"donorIdsForImpactPhotoCheck":["MzgxMTg0","NDAwNDQ2"],"teacherId":258426,"schoolCounty":"Sacramento","fullyFunded":true,"isStudentLed":false,"isExpired":true,"schoolStateObj":{"code":"CA","name":"California"}}