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Ms. Perales from Bakersfield CA is requesting Lab Equipment through DonorsChoose, the most trusted classroom funding site for teachers.

Discovering Force, Friction and Relative Mass

Help me give my students the opportunity to examine the effect friction has upon moving objects and discover why friction impede the free movement of objects. They will understand the relationship between force, friction and mass.

  • $599 goal

Hooray! This project is fully funded

Hooray! This project is fully funded

My Students

I teach at a small public school nestled in the rural outskirts of town. It is a k-8 school and middle school. My students come from very supportive families and home environments, however, many are from economically disadvantaged households.

Despite any and all potential hurdles, my students display high levels of interest and engagement.

I teach 8th grade as the only middle school science (physics and chemistry) teacher. Thank you for your interest and please help support our dissection project!

My Project

Students are introduced to the concept of friction as a force that impedes motion when two surfaces are in contact. Students will work in teams to use a spring scale to drag an object such a wood plank along a table top.

Students will start adding different weights to the plank, try to move it, and measure the force under which the plank just begins to move.

They use the spring scale to measure the frictional force that exists between the moving plank and the surface on which it slides.

As they add more weight, it becomes clear that the amount of force required keeps increasing. This is because the weight pushing the plank downwards increases the frictional force between the plank and surface, and so requires a greater force to overcome it.

Ms. Perales
Grades 6-8
More than half of students from low‑income households

Equity Focus

At this school, more than 50% of students are Black, Latinx, and/or Native American, and more than 50% come from low-income households. Learn how your donation to this school supports a more equitable education.

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

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Where Your Donation Goes

Materials Cost Quantity Total
Slotted Brass Weight - 500 g • Nasco $47.95 5 $239.75
Ajax Scientific Brass Slotted Weight, 200g • Amazon Business $18.90 5 $94.50
Ajax Scientific Brass Slotted Weight, 100g • Amazon Business $15.29 5 $76.45
FedEx small parcel freight • Carolina Biological Supply Company $0.00 1 $0.00

Materials cost


Vendor shipping charges


State sales tax


3rd party payment processing fee


Fulfillment labor & materials


Total project cost


Suggested donation to help DonorsChoose reach more classrooms


Total project goal


How we calculate what's needed

Total project goal


7 Donors


Donations toward project cost


Donations to help DonorsChoose reach more classrooms


match offer


Match offer toward project cost


Match offer to help DonorsChoose reach more classrooms


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

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Project Activity

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