IN JIM'S PE CLASS, 6 STUDENTS WERE USED TO MAKE A HUMAN PYRAMID. 3 PEOPLE WERE ON THE BOTTOM, 2 ON THE NEXT LAYER AND 1 ON TOP. JIM WANTS TO MAKE A GIANT PYRAMID WITH 7 LAYERS. HOW MANY STUDENTS WILL HE NEED AND HOW MANY WILL BE ON THE BOTTOM LAYER.
Would this be the layers?
7, 6, 5, 4, 3,2,1 or counting down,
1,2,3,4,5,6,7
What if you had n layers?
Notice the number of people is
layers Number
1 - 1
2 - 3
3 - 6
4 - 10
5 - 15
6 - 21
7 - 28
Can you see a pattern?