Answer:
abacus is first calculating device
 
        
                    
             
        
        
        
Answer:
Open the shape’s properties window, and type the height value multiplied by 2 and the width value multiplied by 3.
Explanation:
 
        
                    
             
        
        
        
Answer:
In curriculum, a vision of knowledge, the role of the educator and a concept of the process of education are all present. In this sense, Stenhouse suggests that the role of teachers and professors is fundamental in the elaboration and implementation of curriculum.