Curated OER
Making The Geologic Time Scale Real
Students construct a geologic timeline the size of a football field. They work in small groups to calculate the yardage for significant events in the Earth's history and then as a class pace out all of the events.
Curated OER
Teaching Radioactive Decay: Radioactive Half-life And Dating Techniques
Learners generate a radioactive decay table for an imaginary element using a box filled with pinto beans and M&M's. They use their data to plot a decay graph, develop the concept of half-life, and use the graph to "age" several samples.
Curated OER
Graphing of Speed vs. Time
In this acceleration worksheet, students use the date given to create 2 different speed vs. time graphs. Then students use the graphs to complete 15 short answer questions.
CK-12 Foundation
Seasons: Shadow Lengths
Before iPhones and calendars, how did humans determine the seasons of the year? Middle school scientists discover how to use shadows to determine the time of year in an enlightening interactive. Pupils manipulate the sun and examine the...
Curated OER
Assessment & Evaluation
Seventh graders study elapsed time, radioactive decay and half-life. In this time machine lesson students complete several activities and view a presentation.
Curated OER
Using a Starfinder
In this starfinder worksheet, 5th graders construct a starfinder in order to determine which stars are in the night sky on a given date and time. Students use their starfinder to answer 9 questions about the stars and constellations,...
Curated OER
Dating Popcorn
Students simulate the dating process with popcorn. In this geology lesson, students discuss how geologist find the age of rocks by gauging the amount of decay of radioactive elements. They have 6 bags of popcorn and each group microwaves...
Curated OER
Science NetLinks: Fossils and Geologic Time
Students investigate the development of the geologic time scale. Also, to introduce them to the major time periods in earth's history, as well as to the role fossils play in helping us understand this history.
Curated OER
AP: Chapter 25: Phylogeny and Systematics
As a review or note taking guide, this resource wraps up a unit on the tree of life. Biology bigwigs define phylogeny and answer questions about the subsequent classification of organisms. The worksheet takes a straightforward and...
Curated OER
Seasons and Day Time
Learners label a diagram of the Earth rotating about the sun and indicate the direction of the rotation and the seasons at each location. They indicate the seasons, the poles, the hours of daylight at each pole, the direction of rotation...
Howard Hughes Medical Institute
Lesson 2: Gorongosa National Park
How has Gorongosa National Park changed over time? Discover the park's rich history, dating back to primitive human times, through an interactive timeline and scientific reading. The second installment in an eight-part series explores...
Curated OER
Determining the Age of Fossils
High schoolers examine the concept of radioactive dating. In this radioactive dating instructional activity, students investigate how to determine the ages of fossils and rocks as they learn about half-life radioactive decay.
Curated OER
Understanding the Geologic Timescale
Students identify and analyze how the geologic time scale was developed by investigating 11 periods of time and the vast expanse of time of the Earth's existence. They study their period, determine the important factors indicative to...
Curated OER
Methods of Mystery
Students utilize the scientific method to discover the age of an item. In this historical dating lesson, students compare and contrast a 400 year old cabinet to one made within a few years by using carbon dating. Students complete a...
Midnight Martian
Moon Globe
Not just a simple globe of the moon, this interactive version allows you to choose lighting according to the location of the sun, views from different positions on Earth, and more! Satellite images and topographic data have been combined...
Curated OER
Measuring Absolute Time
In this absolute time worksheet, students answer eleven questions about ways to measure the age of fossils. They define half-life, answer questions about radioactive dating, tree rings and varves.
Curated OER
A Journey Through Time
In this science worksheet, students research a specific time frame to discover major scientific developments and historical events. Then they identify at least 50 events and write a brief description of each. Students also create a time...
Curated OER
Dating Sedimentary Strata
Students investigate how the age of sedimentary strata is determined. In this sedimentary strata activity, students work through problems that show that geological history covers millions of years. They distinguish between relative and...
Curated OER
Making The Geologic Time Scale Real
Students are assigned significant geologic events in Earth's history. They convert the date of the events into distances and then space themselves (on an outside playing field) away from other groups, to represent time between various...
Curated OER
Life and Geologic Time
In this geologic time worksheet, students will define the difference between eras, periods, and epochs in the geologic time scale. Students will also look at the role of geological events and fossils. This worksheet has 10 short answer...
Curated OER
Geologic Time
In this geologic time worksheet, students review how fossils were formed and the events that mark the various geological eras and periods. This worksheet has 10 fill in the blank and 9 short answer questions.
Curated OER
Ranger Rick's Notebook: Tree Time
In this Ranger Rick's notebook: tree time activity, 4th graders choose a tree to live in for a week (like a sloth), draw a picture of that world and write what they would do.
Curated OER
Geologic Time: Relative and Absolute Dating
Students investigate relative and absolute dating; determine the difference between the two dating systems; and apply this knowledge by creating a geologic timetable of their own.
Curated OER
Tree-ring Dating
Students complete activity sheets and participate in discussions while they study dendrochronology. They determine a tree's age and recognize how the climate varied over time.