Comments on: Earth Day Math Activities and a Contest from DreamBox Learning http://www.dreambox.com/blog/earth-day-math-activities-and-a-contest-from-dreambox-learning DreamBox Learning, a web-based math learning company Thu, 06 Oct 2011 15:23:16 +0000 hourly 1 http://wordpress.org/?v=3.2.1 By: Rose in Ohio http://www.dreambox.com/blog/earth-day-math-activities-and-a-contest-from-dreambox-learning#comment-116 Rose in Ohio Thu, 22 Apr 2010 21:38:47 +0000 http://www.dreambox.com/blog/?p=5181#comment-116 I pledge to use no chemicals on my vegetable garden this year. I pledge to use no chemicals on my vegetable garden this year.

]]> By: deb http://www.dreambox.com/blog/earth-day-math-activities-and-a-contest-from-dreambox-learning#comment-115 deb Thu, 22 Apr 2010 04:32:33 +0000 http://www.dreambox.com/blog/?p=5181#comment-115 I will not grocery shop without my cloth bags---I will not use plastic bags to "bag" my recycling! I will not grocery shop without my cloth bags—I will not use plastic bags to “bag” my recycling!

]]> By: Matthew http://www.dreambox.com/blog/earth-day-math-activities-and-a-contest-from-dreambox-learning#comment-114 Matthew Tue, 20 Apr 2010 17:15:44 +0000 http://www.dreambox.com/blog/?p=5181#comment-114 We're going to plant TWO Fruit Trees, them pick our oranges and lemons to give to those in need. We’re going to plant TWO Fruit Trees, them pick our oranges and lemons to give to those in need.

]]> By: Kathryn at TwinParenthood http://www.dreambox.com/blog/earth-day-math-activities-and-a-contest-from-dreambox-learning#comment-113 Kathryn at TwinParenthood Mon, 19 Apr 2010 21:26:26 +0000 http://www.dreambox.com/blog/?p=5181#comment-113 Our family is pledging to plant our own vegetable garden in the backyard this year. Never done that before. :) This will cut down on the drives to the grocery store. We'll also take a monthly "garbage clean up" walk to pick up trash. Our family is pledging to plant our own vegetable garden in the backyard this year. Never done that before. :) This will cut down on the drives to the grocery store. We’ll also take a monthly “garbage clean up” walk to pick up trash.

]]> By: Heather http://www.dreambox.com/blog/earth-day-math-activities-and-a-contest-from-dreambox-learning#comment-112 Heather Wed, 14 Apr 2010 18:59:57 +0000 http://www.dreambox.com/blog/?p=5181#comment-112 We live in a very eco friendly region (the same region that Dreambox lives in) so we switched to cloth bags more than fifteen years ago. We have started a new tradition of planting something new in our yard on Earth Day. We study what kinds of plants attract what kinds of birds and insects and pick based on what we want to attract. We live in a very eco friendly region (the same region that Dreambox lives in) so we switched to cloth bags more than fifteen years ago. We have started a new tradition of planting something new in our yard on Earth Day. We study what kinds of plants attract what kinds of birds and insects and pick based on what we want to attract.

]]> By: Doug Stein http://www.dreambox.com/blog/earth-day-math-activities-and-a-contest-from-dreambox-learning#comment-111 Doug Stein Wed, 14 Apr 2010 06:11:34 +0000 http://www.dreambox.com/blog/?p=5181#comment-111 1) Awesome video on Fibonacci numbers in nature! 2) Here's a great "infinity" puzzle that's approachable by kids (but still challenging): The Setup: * There's a motel with an infinite number of rooms running down a single infinite corridor. Rooms are numbered 1, 2, 3, etc. * All the rooms are full. * Whenever a new guest arrives, all the guests move down one room (n -> n+1) leaving room 1 empty for the new guest. This is a minor (finite) inconvenience. The Challenge: * One day, an infinitely large group of new guests arrives. * How can you make room for all the new guests by having all the existing guests move exactly once (and having them move a finite and precisely predictable number of rooms down the hall)? Have fun! Doug 1) Awesome video on Fibonacci numbers in nature!
2) Here’s a great “infinity” puzzle that’s approachable by kids (but still challenging):

The Setup:
* There’s a motel with an infinite number of rooms running down a single infinite corridor. Rooms are numbered 1, 2, 3, etc.
* All the rooms are full.
* Whenever a new guest arrives, all the guests move down one room (n -> n+1) leaving room 1 empty for the new guest. This is a minor (finite) inconvenience.

The Challenge:
* One day, an infinitely large group of new guests arrives.
* How can you make room for all the new guests by having all the existing guests move exactly once (and having them move a finite and precisely predictable number of rooms down the hall)?

Have fun!

Doug

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