Five Senses Review
This week we finally looked at the cow eyes!!! We also got to look at a sheep's brain. Although many of the kids were disgusted, they were also very intrigued!
We compared the real eye to the model and noticed that the cornea that is clear in the model was all foggy and gross looking in the real thing. Because we didn't dissect the eye we couldn't pick out many of the parts we saw on the model but we may do this another time.
I brought the brain in because when we talked about touch, we learned about nerves and how they send messages to the brain. We were able to see the brain stem and also the blood vessels.
To end class, we talked a little more about taste buds and made our own tongue models to take home. (Because the glue was still wet they will bring them home next week.)
In the older class, in addition to what was listed above, we also did a test to see if we are super-tasters. First, we took a small amount of blue food coloring and dabbed it onto our tongues to make our taste buds stand out more. Next, took a small donut-shaped sticker and laid it on our tongue. Then we used magnifying glasses and mirrors to help us count our taste buds.
Normal Tasters have between 15-35 taste buds contained within the little circle, this occurs in one out of two people. People with less than 15 taste buds in the circle are considered non-tasters and this occurs in one in four people. And, if there are more than 35 in the little circle, they are considered super-tasters and that also occurs in one in four people. According to the kids' counts, we have five super tasters in our class!
Lastly, the older students also did the tongue models but they had to use the beads (or markers) to show where the different areas of taste buds are. I still have them and will give them out next week.