A student walks 300 meters due east and then 100 meters due north, then 500 meters due west. The total distance travelled by the student
-
is
meters.

900 meters

Explanation:

If you are talking about how many meters student walked then its 900 metes

But if you are talking about how many meters student travelled from the start point then its 200 meter

i would say

the best answer for these questions would be:

1.            c. is smaller

2.            d) concrete operational

3.            b) interaction with the environment – the children interact with their environment can them learn more.

4.            a) parents who reason openly with children can limit a child’s cognitive ability.