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Age of the Earth Unit for Middle School Science


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Do you need to teach students about the Age of the Earth? Students will construct an explanation based on evidence from rock strata and the fossil record to explain the geologic time scale and the age of the Earth. This unit addresses the NGSS middle school standard from Earth’s Place in the Universe strand. Aligned with NGSS and Utah SEEd. See more of this resource on my blog post Age of the Earth

This Age of Earth Unit Includes:

  • an informative slideshow
  • nonfiction text passages with comprehension questions
  • Timeline activities
  • Follow up pages
  • interactive notebook flaps
  • response pages
  • lesson plans
  • quiz
  • answer keys

Teachers Love this Resource!

Morgan ⭐️ ⭐️ ⭐️ ⭐️ ⭐️ extremely satisfied

The articles and slide show were great, and it really went well with the standards. Students liked recording information on layered-book and making a timeline”.

Jack ⭐️ ⭐️ ⭐️ ⭐️ ⭐️ extremely satisfied

“Excellent unit! Very comprehensive. Includes lots of interesting activities and a great slide show, and even a quiz. My students loved the activities and learned the information. Aligns well with the standards”.

Standards Addressed:

✅ MS-ESS1-4. Construct a scientific explanation based on evidence from rock strata for how the geologic time scale is used to organize Earth’s 4.6-billion-year-old history.


✅ Utah SEEd 7.2.6 7th grade

Make an argument from evidence for how the geologic time scale shows the age and history of Earth. Emphasize scientific evidence from rock strata, the fossil record, and the principles of relative dating such as superposition, uniformitarianism, and recognizing unconformities.

Science topics addressed include:

  • Age of Earth
  • Stratigraphy
  • Relative age
  • Absolute age
  • Radioactive dating
  • Law of Superposition
  • Principle of Cross-cutting relationships
  • Principle of Original Horizontality
  • Index Fossils
  • Isotopes and half-life
  • Geologic Time Scale
  • Precambrian Time
  • Paleozoic Era
  • Mesozoic Era
  • Cenozoic Era
  • Major Events in Earth History

Age of the Earth

Age of the Earth

Age of the Earth

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