Sunday, April 29, 2012
Digging up the trash
Our first unit was about Recycling. During that unit we estimated how long it might take for different materials to decompose. After that we asked Mr. Guido to help us and we buried trash into the soil. That trash stayed there till this Wednesday about 7 months. We wanted to see how much of that trash is still there and how much has decomposed.
Not for our surprise we found trash from glass, metal, plastic was still there. What we did not find was bread and tissue paper. They were gone. When we looked back to our notes we saw that it takes couple weeks for bread and tissue paper to decompose. For the other trash it takes years and years and years. It is better if you do not bury plastic, metal or glass under the ground.
As you see from the photos we also put back the worms that we collected in autumn for our compost. We hope the worms were happy to be free again and visit their old friends. We used that soil from our compost to plant some flowers. As you walk by our classroom you will see them blooming. Now we need to remember to give water to the flowers and hopefully there will be enough sun so they can bloom for a long time.
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