Project Excite


Rectangular Sudoku


Apr 30

Posted: under Math.

Visit this link to solve a new variation on Sudoku.  As usual, the object of the puzzle is to fill in the whole 9×9 grid with numbers 1 through 9 so that each row, each column and each box must contain all the nine different numbers 1 to 9 irrespective of order.

http://nrich.maths.org/public/viewer.php?obj_id=6527


Here are the two additional rules:

Each of the two main diagonals of the puzzle must have the numbers 1 to 9.

Within the 9×9 pattern there is a highlighted “rectangle” with its width four and length six cells respectively. Each width of the “rectangle” outline must contain all the four numbers 1 to 4. Similarly, each length of the “rectangle” must contain all the six numbers 1 to 6.

Comments (207)

Celebrate Pi Day March 14


Mar 13

Posted: under Math.

Here is a link to some interesting pi day activities.  Enjoy!

http://www.nctm.org/resources/

Comments (242)

Solving an Algebraic System


Mar 13

Posted: under Math.

Here is some work from Rodrigo  Soliva, Kaela Hadaway, Miles, Godfrey and Larenz Brown solved :

The sum of two numbers is -2.

The difference of two numbers is 8.

What are the two numbers?

Rodrigo Soliva

Rodrigo Soliva

Kaela Hadaway

Kaela Hadaway

Miles Godfrey

Miles Godfrey

Larenz Brown

Larenz Brown

Comments (279)

Prove or Disprove: Is a triangle with side lengths 5, 12 and 13 a right triangle?


Mar 13

Posted: under Math.

Here is how Briana Mitchell, Larenz Brown, and Ajah Miller proved that that the triangle with side lengths 5, 12 and 13 is a right triangle!

Briana Mitchell

Briana Mitchell

Ajah Miller

Ajah Miller

Larenz Brown

Larenz Brown

Comments (402)

Saturday Showcase


Feb 28

Posted: under Math, Science.

In the classroom:
Share what you learned about:
- solving a system of equations. Can you use Algebra?
- using the Pythagorean Theorem.
- how a laser works. Why are angles important?
- how to make a pop-up card. How is this math?
- the five kingdoms of classification
Why are they important? Where do humans fit it?

At the computer lab:
- Share what you’ve done at our website www.excite.ctd.northwestern.edu

Try out these three new activities:

1. How well can you estimate angles?  Check out this game. 
http://nrich.maths.org/public/viewer.php?obj_id=1235

2. Share images of organisms from each of the five kingdoms. Search for images of what you looked at under a microscope; (human cheek cells, elodea, onion skin, paramecium, amoeba, yeast, bacteria)
www.images.google.com

3. Are you ready to participate in Earth Hour? Check out this link:
www.earthhourus.org/main.php

Comments (260)

Pythagorean Practice


Feb 18

Posted: under Math.

Here is some excellent work from Diamond and Derrick working with the Pythagorean Theorem.

Diamond's Notes

Diamond's Notes

Derreck's Work

Derreck's Work

Diamond's work.

Diamond's work.

Comments (329)

Graffiti Graffer


Feb 18

Posted: under Math.
Tags: ,

Here is some work with the rectangular and polar coordinate systems from Kai, Diamond, Ajah & Larenzkai1

Kai Spiral

Kai Spiral

Diamond's Initials

Diamond's Initials

Larenz's design

Larenz's design

Ajah's 1st Design

Ajah's 1st Design

Multiple groups

Multiple groups

Comments (300)

Happy Birthday Abraham Lincoln & Charles Darwin!


Feb 12

Posted: under Math.

Check out how NU celebrates!
Right click and select open a new tab on the NU link:
www.northwestern.edu/onebook/Darwin_Day.html

After 3:00 pm on February 12th, you will be able to play the new online game, BugHunt, that simulates the process of natural selection.
Right click and open a new tab to play.
ccl.northwestern.edu/simevolution/obonu/

Comments (276)

Saturday, February 7th, 2009


Feb 07

Posted: under Math.

In our warm-up activity, we informally solved a system of three equations and three unknowns. We learned how to use notebook notation, a precursor to using a mathematical matrix, to solve the system.

We used angles to figure out how light reflects off a mirror. Students worked in pairs to guess the angle we need to point the laser at a mirror in order to hit the target posted on the wall.

Next we used the properties of angles and made Pop-up Cards. It was another way of connecting 2-D and 3-D Shapes.

After the break we went to the computer lab and explored different views of magnification.

Comments (331)

Saturday January 31, 2009


Jan 30

Posted: under Math.
Tags:

Today you will visit a web page to learn how to use math to create graffiti. Here is what we expect you to do in the lab today.

Carefully read through each CULTURE web page and write down five things you find interesting from the CULTURE PAGES. When you are done, return to this blog and post a COMMENT sharing your top three findings.

Return to the graffiti website and work your way through the graffiti grapher.

Finally, create your own graffiti design and save it using your own initials. Print out the page and turn it in to Mr. Pligge or Ms. Pligge. Enjoy.

Right click on the link below to open a new tab and begin learning about graffiti and math.

http://www.ccd.rpi.edu/Eglash/csdt/subcult/grafitti/

Comments (267)