All about simple machines  [videorecording] / 
Produced by Schlessinger Media ; First Light Pictures, Inc. ; executive producers, Andrew Schlessinger, Tracy Mitchell & Paul Kramer ; producer, Olga Palacio. 
 - Wynnewood, PA :  Schlessinger Media,  c2000. 
 - 1 videocassette (23 min.) :  sd., col. ;  1/2 in. +  1 teacher's guide. 
 - Physical science for children ;  [8] .
<br/><br/> Includes a teacher's guide.  Volume number assigned by cataloger. 
<br/><br/>Director & director of photography, Tarquin Cardona ; writer, Paul Kramer.  Director & director of photography, Tarquin Cardona ; writer, Paul Kramer. 
<br/><br/>Denise Pospisil. 
<br/><br/> Learn how a simple machine uses one force to overcome another. See how the lever, pulley, wheel, screw and others, form the basis for most tools and machines. Hands-on activity. 
<br/><br/> Grades K-4. 
<br/><br/><br/>VHS. 
<br/><br/><br/>Closed-captioned. 
<br/><br/><label>ISBN: </label>1572252901 
<br/><br/><label>Standard No.: </label>753201033239 
<br/><br/><label>Publisher. No.: </label>K7113  Schlessinger Media 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Simple machines.<br/>Machinery.<br/>Mechanics.<br/>Levers.<br/>Wheels.<br/>Pulleys.<br/>Video recordings for the hearing impaired.<br/>Mechanics.<br/>Machinery.<br/>Simple machines.<br/>Wheels.<br/>Closed caption video recordings.<br/>Physical sciences.<br/>Physical sciences.