Science and social studies teachers can use these sample learning activities to teach reasoning skills in grades 5-9. The publication was developed by a group which provides information and assistance to Vermont educators of science and social studies in the fifth through the ninth grades with a focus on the teaching and learning of reasoning skills. Sample reasoning lessons were drawn from the most popular 5th through 9th grade science and social studies texts, along with some innovative lessons from non-text sources. The first part of the publication contains 40 science learning activities; the second part contains 32 social studies activities. The kind of information provided for each activity includes the following: grade level, reasoning competency, type of activity, source (e.g. textbook and publisher), materials needed, teacher directions, mastery criteria, and, in some cases, comments. The types of activities are many and varied. In the science activities students classify animals according to a key, develop a classification system based on external features, separate petroleum products into groups according to physical properties, and build a storage cell. Social studies activities involve students in constructing graphs, reading selections to find specific information, grouping historical people, classifying words, reading a selection and then putting statements in proper order, and brainstorming and analyzing. (Author/RM)