Does any one have a Pearson square activity where you "make" your own feed? And if so how do you accommodate for more than two items in the ration? I have 3 Ag I classes that could really use a hands on activity to spice up the swine unit. Thanks!
see the attached activity
I've used a similar activity that University of Nebraska has available, but I took it a step further. We 'ground' the 'feed' in a food processor, we used our magic bullet, but a blender might work. Then, they tasted the 'feed', tasting for the different items. In this case, there was M&Ms, peanuts, raisins, pretzels. When they taste that one bite has all ingredients in it, I think they caught the concept that feed should be mixed and have similar particle size so that each bite has all ingredients. The UNL lesson has 2 recipies, 1 has exact amounts and the other has estimated (hand full of this, a bunch of that, a few of these) so that you can talk about accuracy.
When I introduce ration balancing, I bring in cookies. Each student gets one and I tell them not to eat it until everyone has one. The cookies have too much salt, enough for them to tell but not enough to make them sick. Most times, they notice the difference right away. Some still eat the cookies but most go in the trash. We talk about mixing correctly and palatibility. Then, they all get a cookie to redeem my (or my wife's) ability to bake. I have also done this with garlic salt. Some students remember this for a long time and ask me each time I happen to bring food to class if I made them correctly. :-)
Kurt, Do you have a file or a link that you could post here of that activity??
The University of Nebraska @ Lincoln activity is a word document. Just do a google search for Good Production Practice 8: UNL Animal Science Assuring Quality.
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