Underwater Digging!

Summary

This 3 part lesson is designed to introduce students to the idea of core sampling and what information can be derived from such an activity.

In Activity 1 we look at different tools that are used for core sampling from the bottom of a body of water and learn about the process using the backstory of researcher Mia Tuccillo and her research in Greenland using core sampling. In Activity 2 we look at a side profile of a pre-created soil sample to make any observations and/or predictions about what we might find inside a core from that sample. In Activity 3 we actually take a core from the pre-made sample and concentrate on the process of observing the sample without contaminating it as well as recording our findings.

Target grades for this would be middle school but it can be adapted up or down pretty easily.

Materials and Preparation

  • Activity 1:
    • Pre-printed matching activity: Lake Coring Tasks
      • Print and cut out enough copies for groups of up to 4
    • Background information/introduction to core sampling and a backstory of researcher Mia Tuccillo and her research in Greenland using core sampling: What is Lake Coring?
  • Activities 2 and 3:
    • Posterboard and/or paper for soil profiles
    • Markers/pencils
    • Plastic tubs to make soil samples for coring. You want enough to make at least one core per group of students, but ideally one per student
    • Bulb planter for coring
    • Read through the first page of Soil Profiling and Sampling to decide which of the following will be included in the soil samples:
      • Sand, clay, dirt, soil, mulch…
      • Pebbles, rocks, stones, crushed chalk…
      • Colored glass, gems, dino bones…

Learning Objectives

Objective #1
Match name, purpose, and picture of equipment used for taking core samples from sub-aquatic regions
Objective #2
Diagram a side profile of a pre-made soil sample to determine the number of layers and document as well as possible the contents of each layer
Objective #3
Analyze and record the contents of a core sample after extracting said sample from a pre-made source

Importance and Relevance

This activity connects polar science to the bigger picture by showing how lake sediment cores act as “time capsules” that reveal past climate, ecosystems, and environmental changes over hundreds to thousands of years.  Students learn that the same scientific methods used in Arctic regions like Greenland can also be applied to lakes and landscapes closer to home, helping them see how global climate systems are interconnected. By analyzing layers that record changes such as pollution, drought, or vegetation, students begin to understand how past environmental shifts relate to current climate challenges and future decision‑making.  This builds relevance by linking local observations to global climate science and highlighting real-world applications in environmental monitoring and community impacts.


Art Science Integration

Art and science work together as students create visual models of sediment layers to represent and interpret scientific data. Drawing and diagramming the layers supports observation, prediction, and analysis as students investigate core samples.  This combination helps students better understand and communicate complex concepts like layering, time, and environmental change.


Opening Activity

Activity 1:  Use the Lake Coring Slides to introduce students to the process of core sampling in a lake and the backstory of researcher Mia Tuccillo and her research in Greenland using core sampling. Then students will take a look at different tools that are used for core sampling from the bottom of a body of water such as a lake.

Students do not need any background knowledge for this lesson as this activity introduces the concept in a manner that assumes no background knowledge. A short discussion about anthropology and ways that humans look at our histories would be appropriate.


Activity Overview

Activity 2:  Students first create a detailed posterboard drawing of the soil layers they can see from the side of the bin, with expectations adjusted by grade level, from basic drawings and colors in elementary to predictions about composition in older grades. Because most hidden items aren’t visible, students make informed predictions, collaborate in teams, and must complete their profile observations before moving on to core sampling.

Activity 3:  Students extract soil cores and separate layers, removing items without touching or contaminating the sample. As they work, they document their observations, collect interesting finds, and compare minerals represented by colored glass, with each bin providing multiple cores for exploration.


Reflection

Activity 1:  Students will complete the matching activity showcasing what they learned about the tools used in collecting data from sub-aquatic regions, especially with regards to collecting core samples underneath bodies of water.

Activity 2:  Students can gallery walk all of the profiles drawn by other groups/students in their class.  They should take note of commonalities as well as look for things they may add or do differently if they were to repeat the tasks.

Activity 3:  Students should produce a reflective journal (or add to their posters from Activity 2) to highlight their findings when analyzing the contents and compositions of their core samples.


A Special thanks to Mia Tuccillo for her collaboration on this project.  Without her insights and expertise, it would not have been possible to gather the information needed to produce these activities.


NGSS Science Standards:

Science Practice 2
Developing and using models
Science Practice 3
Planning and carrying out investigations
Science Practice 8
Obtaining, evaluating, and communicating information
Crosscutting Concept 3
Scale, proportion, and quantity
Crosscutting Concept 4
Systems and system models
Crosscutting Concept 6
Structure and function
PS 1
Matter and its interactions
ESS 3
Earth and human history
ETS 1
Engineering design

National Core Art Anchor Standards:

Creating 1
Generate and conceptualize artistic ideas and work

Polar Literacy Principles:

6A
Humans have inhabited the Arctic for thousands of years.  There is evidence of human Arctic presence from over 40,000 years ago.  Humans continually adapted to inhabit the unique environment.
7B
Today, scientists use satellites, drifting buoys, tethered buoys, subsea observatories, unmanned vehicles, automated weather stations, sensors, ice cores, airplanes, helicopters, magnetometers and more to constantly and remotely study the Poles.
7C
Piecing together historical data recorded by early explorers with ice cores and sediment cores gives scientists an understanding of natural history.

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