Saturday, February 12, 2011

Plant experiments

Experiments for P week were relating to plants. They included starting a potato growing in water and putting celery in food coloring. The first will take a while to show results, but the second was a one day deal. We slit the celery down the middle up about half way. Then half of the celery went into blue food coloring and the other half went into red food coloring. In the book, the kids saw that when celery was put in only one color the leaves turned the color of the food coloring. So I asked for a hypothesis. They all know what this means thanks to the Dinosaur Train show that I DVR for reward TV. A hypothesis is an idea you can test. So Hannah's hypothesis (which was widely agreed upon between them all since Hannah is their little leader) was that the leaves would turn purple.


End results: I had to redo this experiment during rest time because I realized that the concentration of food coloring wasn't high enough to show the color difference in the celery. So I found tiny glasses and put just a bit of water in the food coloring. Here was the result.


Half red and half blue. We discussed why their hypothesis was wrong and hopefully learned something!

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