|Find the Washer|
This lesson teaches students that scientific hypotheses are subject to being tested. A closed box is shown to the class. It can be seen that three wires run through the box lengthwise and three more run through it widthwise, creating a grid of six crossed wires. The class is told that there is a metal washer somewhere on one or two of the wires inside the box. The challenge is to propose a series of tests(pulling out the wires, one at a time, listening for the washer to drop) in such a way that the location of the washer can be ascertained.
Intended for grade levels:
Type of resource:
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Cost / Copyright:
Copyright 1999 ENSI (Evolution and the Nature of Science Institutes) This material may be copied only for noncommercial classroom teaching purposes, and only if this source is clearly cited.
DLESE Catalog ID: DLESE-000-000-004-636
Resource contact / Creator / Publisher:
Author: Tom Watts