Introduction to decimal fractions.  [slide] / 
Harper & Row, Publishers, inc. 
 - White Plains, N.Y. :  Center for Humanities,  1979. 
 - 53 slides :  col. ;  2x2 in.  & cassette (1/2-track. mono. 36 min.), teacher's guide, and worksheet. 
 - Competency skills in arithmetic ; module 8 .
<br/><br/> "The skills group."  Also issued with sound accompaniment on disc. 
<br/><br/> Topics covered include place value, writing decimals as fractions, addition, subtraction, multiplication of decimals, powers of 10, and rounding off. 
<br/><br/><label>LCCN: </label>78720242 /F 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Decimal fractions.
<br/><br/><label>LC Class. No.: </label>QA117