Texas Mathematics Grade K
 
Conservation of number
 




 
In this clip, Marilyn Fetter explains teaching strategies to use with students as they discover that the number of objects does not change when the objects are moved or rearranged.
 
Conservation of number
In this clip, Marilyn Fetter explains teaching strategies to use with students as they discover that the number of objects does not change when the objects are moved or rearranged.