Wednesday, September 28, 2011

What is a mixture?

Today's science lesson was about mixtures. A mixture is a combination of several ingredients that can be separated into their original substances.

Wow! That is really technical for a first grader. This is what we did to break it down for our experiment. We started with our fruit bowl. (Which is rather empty since it is the day before grocery shopping.) We observed how the lemons and limes were mixed together. Then Bubba separated them into their original groups. Two lemons and two limes.

Next we took some sugar and put it into the bottom of a pitcher and I added some hot water. Bubba watched as I mixed it all together until the sugar was dissolved. We observed that the sugar could not be removed from the water. Therefore it was not a mixture.

(We then added some tea bags to the sugar water to make some sweet tea. No reason for it to go to waste!)

Next, I gave Bubba a cup of popcorn, mini marshmallows, pretzels and raisins. He poured them all into a bowl and stirred them together.

We observed that it was a mixture because we could separate it into it's original parts. Which Bubba then proceeded to do.

After he was done sorting everything back to it's cup. Bubba poured everything back into the big bowl and we shared this yummy snack. (Made even a little sweeter since Princess was sleeping and he didn't have to share with her!)

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