You can see over 300 examples of research by Iowa kids today at the annual State Science and Technology Fair in Ames. Andrea Spencer is the director of the 46th annual fair.She says the purpose of the fair is to help students develop their interest in science and research. She says around 430 students worked on the various projects. One project looked at the different tensil strengths of string to see how they conduct sound, and another involves a botany project that studies b-t corn and butterflies. Spencer says the middle and high school students are competing for over 32-thousand dollars in prizes and scholarships. The Science Fair runs from 9 A.M. until noon today in Hilton Coliseum.