yril Tintarev* (Sweden), kyril@math.uu.se MINOS SE - A New Symbolic Computation Package with Intuitive ("Natural Syntax") Interface MINOS SE (Mathematical Interface with Natural Object Syntax - School Edition) uses the same icon-folder metaphor as modern file system shells to represent mathematical objects. The emphasis in the interface moves therefore from a linear log to a pane populated with metaphorical objects. Algebraic operations are performed by click or drag, exploiting the ease of visual memorization in comparison to memorization of string syntax. MINOS SE is built upon a modest symbolic omputations kernel and enjoys an integrated object structure from forms to icons in panes all the way down to expression trees. The program supports most of algebra and calculus curriculum fot high school and the first year of college. Testing of MINOS SE in the live classroom instruction in several high schools in Sweden showed that it takes about 10 minutes for students to master the program and the use it without looking up a manual.