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Classful

Details

Pages
15 Pages
Subject
Science, Chemistry, Physical Science
Languages
English
Product
Digital
Grade
7th, 8th, 9th
Resource Type
Homework, Laboratory
Standard
Next Generation Science Standards

Description

The demonstration of burning steel wool has the wow factor and thrill of fire. This resource will introduce your students to compounds as it helps them make sense of the unexpected result of an increase in mass as the steel wool burns. Engage your students with an unexpected outcome. When complete, this lab sheet easily fits into there notebooks.

After learning that elements are the substances made of a single type of atom that can not be broken down by physical or chemical means, introduce the phenomena of compound formation with the discrepant event of burning steel wool.
When one considers fire, they often think of the fire as consuming or destroying what is burned. Imagine your students surprise when burning steel wool results in an increase in mass. This will create cognitive dissonance by surprising the students with results that are the opposite of what they expect. They will ask questions and want to know why.

What is a discrepant event and why is it a useful teaching tool?
A discrepant event is a teaching strategy. Students are shown a demonstration with an unexpected outcome that forces students to learn new information to rectify the confusion of the unexpected.

Purpose
Discrepant events are used to capture students' attention and help them confront their misconceptions. They can also help teachers assess students' preconceptions.
How it works
Discrepant events create cognitive dissonance by presenting students with results that are the opposite of what they expect. This prompts students to ask questions and reconsider their beliefs, which can lead to learning and conceptual change.
The demonstration of burning steel wool has the wow factor and thrill of fire. This resource will introduce your students to compounds as it helps them make sense of the unexpected result of an increase in mass as the steel... more
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Burning Steel Wool, A puzzling phenomena (discrepant event) to study compounds.

Melissa Jaeger
$2.70 $3.00 -10% Off