math and science education search Mr. R.'s world of math and science free and accessible educational resources for all

 


Pi (π)

A pi was once found,
In ancient Greek times,
Not made from apples,
Cream or key limes...
key limes
Not dessert pies,
Not pies that we eat,
This pi's a math constant,
But it's still really sweet...
apple pie
Pi's pretty easy,
It’s  3.14,
Helps me find area,
Of circles and more!
Yes,
π⋅r2
The space inside there,
Inside a circle,
Won't work with a square...
Pi also knows,
The distance around,
A circle's outside,
Use pi, and it is found...
Yes circumference,
Is found,
Using this pi,
(π⋅d)
Can't do it with chocolate,
chocolate pie
Although you could try...
This constant called pi.
It's all really cool,
And I use it each time,
I roll off to school...
bike wheel with colored spokes

Math Challenges
If a plate has a radius of 8 inches, what is its circumference?
If a bicycle wheel has a diameter of 30 inches, how far will it roll in one complete revolution?
If a pizza has an area of 50 square inches, what is its radius? (approximately)


Like geometry? Watch Mr. R.'s hypotenuse music video!

Watch Mr. R.'s math music video about right triangles!
if youtube is blocked, watch it here Hypotenuse


 

join me on Youtube

 

Custom Search
copyright Mr. R. 2012