Fossil Rocks

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In this activity, learners will discover how fossils are dug out of the earth by carefully exposing treasures hidden in an artificial rock that is easily made at home. They will make their own fossil rock (or it can be made ahead of time by an adult), and use simple tools to find the "fossils" inside. The activity includes a time and age recommendation, a materials list, step-by-step set up instructions, tips for adults, learning and skills connections, a "what's going on" section, and a note about doing STEAM with kids. This activity requires an oven to make the rocks.

Quick Guide

Preparation Time:
4 to 24 hours
Learning Time:
10 to 30 minutes
Estimated Materials Cost:
$1 - $5 per student
Age Range:
Ages 6 - adult
Resource Type:
Activity
Language:
English

Materials List (per student)

  • 2 cups of flour
  • 1 cup of salt
  • 1 cup ground coffee
  • 1 cup salt
  • A mixer OR large bowl and mixing spoon
  • A baking sheet
  • Small toys or treasures to hide inside the rocks; OR buy actual fossils here
  • https://geologicalenterprises.com/
  • Paintbrushes
  • A small screwdriver
  • A light hammer or mallet
  • A small bowl of water

Keywords

Subjects

  • Engineering and Technology
    • Technology
  • The Nature of Science
    • Science as a Career

Informal Categories

  • Animals
  • Model Building
  • Nature and Environment

Other

Access Rights:

  • Free access

By:

Rights:

  • All rights reserved, Boston Children's Museum, 2021