So what is the difference between and a mixture and a solution? Maybe one of the games at the following links will help you figure that out. Have fun while learning.
The oceans cover more than 70 percent of the earth's surface, yet their depths remain largely unknown. It's a frontier that scientists are racing to explore using tools such as the deep-ocean submersible Alvin, shown here. Check out the link below to see some of the amazing creatures of the deep.
This green slug, which is part animal and part plant, produces its own chlorophyll and so can carry out photosynthesis, turning sunlight into energy, scientists have found. Read more at the link below.
Isn't this lovely. Plastic rocks! We don't need to recycle. Lets just dump it in the ocean. What harm could a trash island the size of TWO Texas' do?Sarcasm again kiddos. Read the article below to learn more and what you can do to help. Just another reason I'm so adamant about recycling and not using evil plastic bags!!! Spread the word.
http://www.treehugger.com/galleries/2009/05/great-pacific-garbage-patch.php
I know everyone loves McDonald's. Read this article and you might change your mind. Now you know one of the reasons why Mr. Schlebus is a vegetarian. 
Here's an excellent article on 14 amazing plants and the unique characteristics they have that help them to survive. See if you can spot the parts of the plants we discussed this week, and how each uses them in different ways.http://scienceray.com/biology/botany/14-amazing-plants-and-their-unique-characteristics/
Here's a great website that shows you all sorts of fun activities you can do at home with electricity and magnets. And what a coincidence that we will be working with both of these items this week in lab. Enjoy 4th graders.