## Volume of a Penny Lab – New!

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Problem: How can we use water displacement to calculate the volume of one penny?

Materials:

• Volume of a Penny Lab (PDF)
• Graduated cylinders (25 mL, 50 mL, or 100 mL)
• Cup or beaker of water, food coloring optional
• Pennies – 100+ per group
• Tub
• Plastic Spoon – to pour water out of graduated cylinder and separate pennies

This is a simple & fun lab to have students practice measuring and reading volume as well as use water displacement to determine the volume of  a penny – an irregularly shaped object.

Students will design their own series of 10 tests with the following criteria:

• All pennies must be under water inside of the graduated cylinder.
• The volume of water must not pass the 100 mL (or highest) increment.
• All data is recorded carefully.

Students were able to carefully measure and determine that the volume of a penny was 0.35 mL – most students were very close with a range of 0.33 – 0.37 mL.

https://www.instagram.com/peckscience/

## Finding the Mass, Volume, and Density of Water Lab (Google Sheets)

Materials:

Goals

• Students will practice their measurement skills using a graduated cylinder to determine volume and a triple beam balance to determine mass.
• Students will determine the density of water by completing 10 trails and finding an average.

I use this lab to tie their measuring skills together and introduce the concept of density. We then do further explorations of density and practice using the formula.

This lab is a modified version of the lab posted at Middle School Chemistry – for further details about the lesson, please click on this link.

## Reading a Graduated Cylinder – Rotation Stations

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Materials:

Lesson Tips

• Introduce how to read a graduated cylinder using the meniscus.
• Review how to determine the increments for each graduated cylinder.

## Finding the Volume of Irregularly Shaped Objects Using Water Displacement

(For lessons and resources on reading and using graduated cylinders, please see my related blog entry)

Materials:

• 2 graduated cylinders per group of 4 students
• 1 container of water per group
• 1 plastic tray per group
• 1 plastic spoon per group
• this is used to stop item from falling into the container and to fish out items if needed
• paper towels or cloth towels
• green or blue food coloring – a few drops per 500 mL
• adding food coloring helps the students to make accurate readings since it easier to see the water, plus it is fun to work with 🙂
• I don’t like to use red or yellow, they tend to stain more than the blue and green food coloring
• an assortment of small objects such as pennies, rubber stoppers, marbles, pebbles, etc…
• Water Displacement – Volume Lab Handout (pdf)