Carr, Martha. <br/><br/>
A longitudinal study of spatial skills and number sense development in elementary school children / 
Martha Carr, Erin Horan, Natalia Alexeev, Nicole Barned, Lu Wang, and Beryl Otumfour  
 - Washington,   American Psychological Association,    January 2020. 
 - volume 112, pages 53-69, illustration.  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics. <br/>Numbers.	<br/>Verbal learning.
<br/><br/><label>Dewey Class. No.: </label>DPer 370.15 J826 January - February 2020 v112 no. 1-2