Students discover the ins and outs of international trade using two group activities and a Powerpoint presentation. This lesson plan is intended for a High School Economics classroom but could be used in a Social Studies or European...

In this French Revolution and Russian Revolution study guide worksheet, high schoolers examine facts about the two wars and respond to questions regarding similarities between the revolutions.

Young scholars research the Mayan number and calendar system. They translate a variety of math problems from base-10 Arabic numbers into a base-20 Mayan representation. They discuss current challenges faced by the people in today's...

Ninth graders investigate the concept of a tetrahedron and how it is formed with its congruent faces. They practice making the shape by practicing the folding paper to create the shape. Students continue the lesson plan with the...

Students explore properties of triangles using angle bisectors, incenters, circles, midpoints, and altitudes. They use Geometer's Sketchpad in order to create triangles and their properties.

In this foreign language worksheet, students discover that many Polish words are similar to those in English and the meanings can be guessed. Students read a chart of 220 Polish words and their English translations. Example: balon...

In this suffix worksheet, students complete a chart for words that contain the suffix 'ful.' Students then use the words to complete the sentences. Students write the last set of words containing the suffix into their own sentences.

Explains what absolute dating is as compared to relative dating and how they can work together. The characteristics of several different radiometric methods are compared. Includes three short videos and an interactive where students...

An explanation of radiometric or absolute dating of geological formations based on using the half-life of radioactive elements to figure out how old given rock layers are. A link on the left provides information about relative dating as...

Explains what relative and absolute dating are and some different methods used for each. A Venn diagram is presented showing what characteristics they share and how they differ.

A lengthy scholarly article that discusses the geologic time scale, its history of development, age-dating events that occurred in different eras, and how absolute and relative dating are used to assess the ages of the Earth and Moon....

This set of activities from the Milton J. Rubenstein Museum of Science & Technology has students investigating how relative dating and absolute dating methods are used to determine the age of rocks and fossils.

A resource highlighting the process of dating methods in archaeology. Look at Relative Dating and Absolute Dating systems.

In this entry for Absolution, the Sacrament of Penance is dicussed. This article was written from a Catholic point of view. Please note that "The Catholic Encyclopedia" is a historic reference source and should be viewed in the context...

Geologists generally know the age of a rock by determining the age of the group of rocks, or formation, that it is found in. The age of formations is marked on a geologic calendar known as the geologic time scale. Development of the...

[Free Registration/Login may be required to access all resource tools.] Describes how scientists learn about the past by examining and dating fossils.

In this interactive tutorial you will explore how geologists use clues in rocks to determine the order in which rocks formed. Learn how principles of radioactivity are used to assign actual ages to rocks. Students will explore fossils...

[Free Registration/Login may be required to access all resource tools.] This comprehensive lesson by CK-12 explains how scientists learn about the past by examining and dating fossils.

A virtual lab allows you to do radiometric dating on dinosaur bones. You'll be using a mass spectrometer and utilizing several steps of the scientific method.

An 81-page slideshow that looks at the principles of geology with respect to relative dating, at different concepts describing geological processes, at absolute age and radiometric dating, at the eons and eras in the geologic time scale,...

This is a good source for getting an in-depth description of using radioactive decay to measure the ages of rocks. In addition to describing the process of radiometric dating, this resource also includes a geologic time scale and four...

Find out how scientists at Woods Hole Oceanography Institute use radiometric dating to figure out the age of volcanoes. A slideshow of the history of radiometric dating can also be viewed.

This investigation helps students examine issues related to measuring poverty. Is reducing poverty an appropriate economic role for government? How do you measure poverty? What is not examined when measuring poverty? What are alternative...

A lesson plan containing two activities for students to gain a better understanding of geologic time scale. The first activity allows students to get a visual of geologic time by role playing events in time on a football field. The...