Measuring the Earth
will Technology’s Promise be
realized in Math Education?
Research & Innovation
in Teaching Math with Technology
|Set the Stage:
Overview Math 2.0
Rosling's dynamic video (4min)
*Don't Panic - the facts about
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
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
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
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
Link to activity
My blog entry about this activity - link
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.
||A Pi Day
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.
Green Globs Challenge
is the highest score you can get for
this array of Globs? (Link)
Blog entry and Video
tutorial intro (3:40)
Green Globs meet Parabolas (3:44)
Neil Cooperman - Green
Globs Contest (1995) - video
circumference of the Earth Project
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.
the Spirit of Eratosthenes: Measuring the
circumference of the earth - Ihor's
Every March and September
Carl Sagan tells the story of