Wathall Jennifer T H <br/><br/>
Concept- based mathematics: Teaching for deep understanding insecondary classrooms 

 - Thousand Oaks, Calfornia  Corwin Press  2016 
 - xxv, 268p. 
<br/><br/><label>ISBN: </label>978-1-4739-0644-0 
<br/><br/><label>Source: </label>Reference