Let's begin by doing some math.  Imagine you took a piece of string and wrapped it around the cans above and measured one distance around the top of the can (circumference). Then, imagine measuring the height of the can using that same string. Which can/container do you think would ha...

        As a former 5th grade teacher of 13 years, I readily admit that I had no idea the complexity of the development of early numeracy from birth to kindergarten. It wasn't until I became a Math Coach K-5 and began delving into the research of Clements and Sarama on Learning Trajectories and ...