
Measuring the Earth
Project

When
will Technology’s Promise be
realized in Math Education?
Research & Innovation
in Teaching Math with Technology
Tuesday, 7/12/2016
11:00am–12:00pm

0

Set the Stage:
Overview Math 2.0
Warmup
video: Hans
Rosling's dynamic video (4min)
Gapminder
Tools
*Don't Panic  the facts about
population


1

Jinx
Puzzle
Pick a
number, Add 11, multiply by 6,
subtract 3, divide by 3, Add 5, Divide by 2,
and subtract the original number. Surprise 
you have been jinxed.
For spreadsheet entries click here.
Blog entry  link
Jinx puzzle lesson  link
Jinx calculator  link
Proof  marbles & bags  link


2 
Fermat's
Last Theorem Debunked?
In an episode of the Simpsons, Homer
appears to write a valid solution to
debunk Fermat's Last Theorem which was
proven in 1995. Is Homer's effort a real
counter example?
Source: The Simpsons and Their
Mathematical Secrets  Link
Did Homer solve Fermat's Last Theorem?  Link
Math Stories  Engaging students in thinking
about mathematics  Link


3 
Average
Traveler Activity
Today we are going to find out
who traveled the average distance to get to
this conference. First we'll start off with a
guess. What do you think is the average
distance that the members of this group
traveled today?
Link to activity
My blog entry about this activity  link


4 
The Weird
Number
The story of the Weird Number is
a delightful excursion into a fantasy
world of a town inhabited by natural
numbers. A robbery occurs that helps them
to learn they are rational numbers. But
nobody could believe that there were
strange numbers living in the dark woods
that weren’t rational.
http://dynamicmathclassroom.blogspot.com/2014_10_01_archive.html


5 
A Pi Day
Mystery
My
favorite Pi Day activity is the one where
random needles dropped on parallel lines
lead to an approximation of Pi. Why Pi?
Good question. We'll answer that in this story.
George Reese's explanation.


6 
The Great
Green Globs Challenge
What
is the highest score you can get for
this array of Globs? (Link)
Globs
Blog entry and Video
tutorial intro (3:40)
Video:
Green Globs meet Parabolas (3:44)
Neil Cooperman  Green
Globs Contest (1995)  video
(12:30)


7 
Measuring the
circumference of the Earth Project
Over
2,000 years ago Eratosthenes made a
remarkably accurate measurement of the
earth's circumference. This project is a
recreation of that measurement and requires
collaboration of students in places at
different latitudes on the earth to make
shadow measurements, share data, use a
spreadsheet (optional) to make comparisons,
and then replicate and share their results.
In
the Spirit of Eratosthenes: Measuring the
circumference of the earth  Ihor's
article
Every March and September
 Collaborative
Project Website
Carl Sagan tells the story of
Eratosthenes (Youtube)

