Cows are milked, then the milk is transported to a factory. Here it is sterilized and homogenized. The milk is then mixed with other ingredients and frozen into ice cream.
About the Author
James A. Shymansky, Ph.D. is an E. Desmond Lee Professor of Science Education at the University of Missouri-St. Louis. He currently directs the "Science Cooperatives Project," a five-year NSF systemic reform effort involving 1,200 elementary school teachers from 36 school districts in rural Missouri and Iowa. He has authored an elementary science textbook series and a K-12 science review series. He has also authored more than 100 research publications, book chapters, and monographs on elementary school science. He is the past editor of the Journal of Research in Science Teaching and currently senior editor of the International Journal of Science and Mathematics Education and President-elect of the National Association for Research in Science Teaching.