Anno's Mysterious Multiplying Jar

from amartino1208

This book attempts to explain factorials to students with a magically jar that has a world in it. The world breaks into multiple different scenarios where the number of objects get larger. I find the book becomes confusing because at the end if tries to explain the problem and makes it more diffi...

from lquilter

Sort of a surreal picture book in which inside a vase is an island, and on the island are many things, including ultimately the vase .... A nice concept, but it didn't do as much for me as I'd hoped.

from kgeorge

This story begin with 1 jar and then when we look inside this jar we find 2 countries each with 3 mountains with 4 walled kingdoms, 5 villages, 6 houses, 7 rooms, 8 shelves, with 9 boxes and 10 jars where the cycle repeats again. The author then uses dots to represent this concept in order to exp...

from mathcircle

Delightful way to introduce the idea of factorials to children.

from mathcircle

Delightful way to introduce the idea of factorials to children.