Math in the 4/5/6 Classroom

At a recent All-School Meeting, a fifth grader shared some engaging mathematics from the 4th, 5th, and 6th Grade classroom, connected to their "Neuroscience, the Brain, and Mindfulness Curriculum." Here is the student's "share":

My favorite part of math is learning how many neurons there are in the entire school body! Over the past week the 4th and 5th graders have been writing a recipe for the human body. There are 86 billion neurons in a single brain. We are calculating the total number of neurons that can be found in each classroom. We found that 4th/5th/6th graders collectively have 1,462 billion neurons in our class (in other words, 1.462 trillion neurons!). And that’s not including teachers! We have also been calculating how many internal organs there are in each classroom. First we take the quantity of the internal organ (for example, the human body is made up of 640 muscles); then we multiply that number by the total number of students in each classroom. We found that there are 8,860 muscles in the 2/3 classroom; 946 billion neurons in the K/1 classroom; and 378 pints of kid blood in the entire school! --5th Grader