Ballesteros, Emmanuel B., et al.  <br/><br/>
Matematika:  A mobile learning sytsem in Mathematics for Grade 2 / 
Emmanuel B. Ballesteros ;;; [et al.] 
 - City of Batac :  MMSU,  2014  
 - ix, 103 leaves :  28 cm.  
<br/><br/> Thesis (BS  in Computer Science) -- Mariano Marcos State University - College of Computing and Information Sciences, City of Batac. 2014. 
<br/><br/>Bibliography:  leaves 43-45