This is a collection of Grade-Leveled texts (3-12) to address the question, "How has America changed over time? Select a grade level and a collection of on grade-level reading passages on the topic comes up. [Free account registration...

First graders will learn to compare and contrast changes over time.

Learn about the of indigenous people of America.

Students will compare bird's-eye views of Texas cities in the 1800's to those in the 2000's by identifying landmarks and summarize how the cities have changed over time.

In this interactive activity adapted from A Science Odyssey, learn how technology in the home has changed through the years. Scroll through a timeline from 1900 to 2010 to explore technological innovations in the home (such as...

This resource offers a large collection of games, puzzles, activities, and information pages on the topic of climate change.

By the end of this section, you will be able to explain recessions, depressions, peaks, and troughs; evaluate the importance of tracking real GDP over time; and analyze the impact of economic fluctuations on a country's output and price...

The signs of global climate change are becoming more and more evident. The EPA provides an excellent guide for students that acquaints them with the basic causes, effects on people and the environment, and solutions that they can engage...

This activity allows students to use water surface temperature, bathymetric data, and weather data to look at trends in the water temperature of the Great Lakes.

This lesson focuses on ways to reduce air pollution from power stations and from automobiles. It provides a link to an assessment.

This Kindergarten unit introduces students to the concept of change over time by examining the historic counterparts of objects in children's daily lives, e.g., toys, food, cars, music, telephones, and toothbrushes. This develops an...

See an aerial view of how communities around the globe have changed over time.

An inquiry-based science unit for middle school students centered on how human activities affect environmental changes related to land use. The lessons integrate technology and lab activities while teaching about today's land use and how...

An investigation that is part of a series of lab lessons that expose students to Earth Systems through research, data, and visualizations. In this lab, students will observe how the Earth has changed over time to understand the Earth as...

[Free Registration/Login may be required to access all resource tools.] Create line graphs to display how data changes over time.

By making time capsules, we can decide what message to send to the future about our own lives. If it were discovered years from now, what would the objects say about you and the time you lived in?

Young scholars will learn that landforms can change over time in this lesson. Included are a minute-by-minute lesson plan, activities, and teacher discussion points and questions.

A lesson unit where students analyze long-term weather data for Phoenix to look for changes that have occurred over time. They look at factors that would cause climate warming, including greenhouse gases and other phenomena. They then...

Find out about the ways that species change and evolve over time and generations.

The American Geological Institute has done an excellent job of defining and explaining evolution in this online booklet. Darwin, fossils, natural selection, and change over time are some of the concepts that are covered. Make sure to see...

Students match a word story to the correct set of graphs involving temperature change over time.

This resource uses a text and graph to show how the gender ratio of international migrants - the proportion of male to female migrants - has changed over time. Its goal is to stimulate thinking about shifting gender ratios in global...

A field lab for biology that focuses students on the study of nature and its changes over time. Students are asked to observe and acquire knowledge of trees and the interdependence that a tree shares with other organisms.

Instructional module focusing on why species change over time through behavioral and physical adaptations. Discusses how environmental mechanisms influence adaptive evolution. Site also includes an interactive practice quiz and links...