(#18) Sound
Move a pencil back and forth while smoothly pulling a piece of paper under the oscillating point. This generates a train of waves across your paper with measurable amplitudes and wave lengths. Time the frequency of these vibrations to determine wave speed. Masking tape that is stuck to a vibrating tuning fork and swept across greased glass makes a similar wave train. Relationships between intensity and amplitude, pitch and frequency, follow as naturally as listening. Your students will generate both longitudinal and transverse waves by cutting an index card "slinky." They'll study resonance and beats, even build a musical instrument.
(#18) SOUND is part of our Self-Directing Task Card Series. It is an 56 page soft-bound book organized into three main parts:
INTRODUCTION
* A TOPS Model for Effective Science Teaching * Getting Ready * Gathering
Materials * Sequencing Task Cards * Long Range Objectives * Review / Test
Questions
TEACHING NOTES (20 lessons)
* Sources of Sound * Pencil Waves * Hair Pin Waves * Frequency * Wave
Train * Tuning Fork Waves * Intensity * Pitch * Sound Mediums * Two Kinds
of Waves * Longitudinal Waves * Pitch Problem (1) * Pitch Problem (2) *
Resonance * Beats * Octave Rules * How Low Can You Go? * On the Record *
Reed Music * Speed of Sound
REPRODUCIBLE LINE MASTERS
* 20 Open-Ended Task Cards * Frequency Strips * Metric Rulers
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(#18) SOUND requires tuning forks, but no other special equipment. Just photocopy the 20 task cards, gather simple materials (like bobby pins, cans, soda bottles and adding-machine tape), and you're ready to explore TOPS Learning Systems hands-on.
GRADE RANGE: 7-12
ORIGINS: written by Ron Marson / illustrated by Peg Marson / copyrighted
in 1990
by TOPS Learning Systems / ISBN 0-941008-88-6
ORDERING: Please print a copy of our order form, which lists all our titles. Use this form (or scratch paper) to track your ordering preferences as you browse our website.
#18 Sound @ $9.50
