Excel Investigation: Number Pyramids

Stage: 3 and 4 Challenge Level: Challenge Level:2 Challenge Level:2

Number pyramid


Download the Excel file Pyramid Numbers.

Use the the lower increment button to change the first number in the base line.

How are the numbers in the base line related to each other?

How are the lines above formed?

Notice how the top of the pyramid relates to the middle value in the base line.

Why does that happen?

How could the base line be a set of differently related values, and what would that do to the top of the pyramid?

Use the upper increment button to try other size pyramids.
The NRICH Project aims to enrich the mathematical experiences of all learners. To support this aim, members of the NRICH team work in a wide range of capacities, including providing professional development for teachers wishing to embed rich mathematical tasks into everyday classroom practice. More information on many of our other activities can be found here.
Copyright © 1997 - 2012. University of Cambridge. All rights reserved.
NRICH is part of the family of activities in the Millennium Mathematics Project.