Skittle Erosion Lab

Abigail Montesi

Skittle Erosion Lab

Third Grade Science


o By the end of this lesson, the children will understand how weathering and erosion works.

o During the lesson the children will be able to record their observations.

SCSDE Curriculum Standard(s) Addressed: (APS 4, 6)

o 3.E.4B.2 Plan and conduct scientific investigations to determine how natural processes (including weathering, erosion, and gravity) shape Earth’s surface.

Prerequisites: The student must have a basic knowledge of weathering and erosion and what it does to the Earth. The student also must have knowledge of the scientific method in order to complete the lab worksheet.


 Skittles Lab Worksheet

 Skittles

 Pencil

 Colored Pencils

 Clear Plastic Cups or Petree Dishes

 Water

 Water Dropper


 Introductory Activity:

o Have the students watch the video

o Ask what we have learned about weathering and erosion.

o Compare student’s answers within a small group.

 Main Activity:

o Explain that a skittle has some similarities to a rock.

o Drop 5 drops of water on a skittle and record what happened.

o Repeat with 10 drops.

o Repeat with 15 drops.

o Discuss what happened after each step. Have students use the vocabulary words (weather and erosion) to express what is happening.

o Have students complete the experiment lab as they go, using colored pencils to show what is happening to their skittle.

o If time permits, have the children set aside their skittle trays for one to two hours and take observations again.

 Closure:

o Ask what the children observed today.

o Go back to the answers given in the introduction activity


o The children will complete a lab worksheet while participating in the experiment. They will have to document their findings and use the scientific method. I will observe the children while they are filling out the sheet and guide them if needed.

Adaptations and Accommodations:

o There are three different options for the lab worksheets. There is a beginner, intermediate and advanced sheet. (see the attached pages)

o You can also do the lesson as a group instead of individually.

Follow-up Lessons/Activities

o Have the children observe the skittles one to two hours after the initial observations and document any changes.

o Have the children complete the “Which is it?” worksheet to reiterate the differences between weathering, erosion and deposition.

o In the science center or during independent work time, provide the students with rocks so they can observe the traits a rock has. They will realize that the force of weathering and erosion has to be strong to make a change in the earth’s composition.

PearDeck Presentation


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