Sunday, November 30, 2014

Geometry Review


1. Review of polygons.
http://www.mathsisfun.com/geometry/polygons.html
Answer questions 1-10 on the Your Turn section. 
2. Review of angles.
http://www.oswego.org/ocsd-web/games/bananahunt/bhunt.html
3. Watch the video below.  Answer the following questions:

1. Why is 360 degrees chosen as the measure of a full circle? Give two reasons from the video.
2. What angle do the hands of a clock make at 4:00?
3. Name the four types of angles demonstrated in the video (include the degrees).
4. Tell me one more thing you learned from the video.
http://www.artofproblemsolving.com/Videos/external.php?video_id=197
4,  Animated Polyhedron Models/Nets
Explore the site below.  When you are done manipulating the various shapes - create an octahedron. Use the net model.
http://www.mathsisfun.com/geometry/polyhedron-models.html
5.  Nets
http://illuminations.nctm.org/Activity.aspx?id=3521
http://illuminations.nctm.org/Activity.aspx?id=3544
http://goo.gl/t0xFXx
6.  Challenge Activity
http://www.infoplease.com/math/knowledgebox/player.html?movie=sfw41553

Math POW - due Fri., Dec. 5th























Wednesday, November 26, 2014

Isometric Drawing


1.
http://www.mathplayground.com/cube_perspective.html
Open the above link and play the game.

2.
There are ten puzzles to be solved.
On the main entry page, go to “Building with 3 Sides” and then choose the figures to do (there are 10 puzzles). You can move the grey grid square around to help you do views.
Once you play around and get used to how build mode works, it is a lot of fun.

Important tip for beginners – Build the top view onto the base mat first, and then work upwards from there.
Click the link below to go to the web page.
http://www.fisme.science.uu.nl/toepassingen/00724/

Monday, November 10, 2014

Caribou Contest on Wednesday, Oct. 12th

The November Contest
The interactive question for the November contests will feature the Nim game.

There will be a history question about Kurt Gödel. You can read about him on Caribou's history page. For grades 3-6 the question will ask about the University where he obtained his doctorate.

Sunday, November 9, 2014


What is a reflex angle and how do you measure one? (Post your response,)