The teacher's guide of "Assessing Toxic Risk" aims to help students conduct scientific research on relevant environmental topics. Using the research protocols in this book, students learn to carry out experiments known as bioassays. In this way, the toxicity of substances is evaluated by measuring its effect on living things. The text is…

Science fairs represent the culmination of student research efforts under the guidance of teachers and other persons interested in science topics. The total scientific process should be involved in the development of a project which results in a science fair exhibition. The student should learn to recognize problems, plan an experiment, gather and…