Thursday, April 14, 2011

MORE BIOLOGY EXPERIMENTS

by Robin

A few weeks ago, we did our last of the dissections. The kids had a great time digging into their specimens.

Crayfish - looks similar to dinner.

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Then, they did a perch next - also looks like dinner or bait.

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Last, they dissection their frogs. It was very cool because you can figure out the organs a bit easier because they seem to be more similar to the human body than compared to an earthworm or crayfish.

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Nearly 2 weeks ago, we got back together for more experiments. We did a lot of slide/ microscope work first. Then, plant ID. But, the funnest part was the pH experiment where we boiled up red cabbage into a certain amount of water.

Cabbage water on left, windex in center (suppose to be clear but the blue did work) and white vinegar on right.

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As we poured in Windex in, the pH changed!!

VIDEO REMOVED because it refuses to wait to be played when asked.

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Then, we could pour vinegar back into it and revert it back to it's original color.

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Very fun for all of us. Before we knew it, a few hours had passed and class was over. On Friday, we meet together one more time for more plant - flower labs. I'm trying to decide if we want to continue into Chemistry or Physics for next year. Hmmmm, decisions, decisions.

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