Clements, Douglas H.  <br/><br/>
Critiques of common core in early math :  a research-based response / 
Douglas H. Clements, Karen C. Fuson, Julie Sarama. 
 - Reston, Virginia ;  National Council of Teachers of Mathematics,   January-May 2019. 
 - Volume 5, pages  11-22. 
<br/><br/><label>Dewey Class. No.: </label>DPer 510.071 J82 January-May 2019 v. 50 no. 1-3