Main

Stratigraphy

Half-life

_____________

Half Life

Objectives

Standards

Background

Example

Activity

    Preparation

    Procedure I

    Procedure II

    Variation

Assessment

Classroom

Glossary

The Origin and Evolution of the Earth System:

A Rising Tide Project for Grades 9 and 10

Half Life: Preparation

Materials needed
 

  1. A cardboard box, approximately the size of a shoe box, which can be closed

  2. An even number of four of five different two-sided objects such as coins or washers.  If washers are used, mark one side with a permanent marker.

  3. Graph paper

  4. Ruler

  5. Colored Pencils

  6. M&M's or Skittles (if doing the alternative)

Time:  15 minutes prep time, One period lab time