Spruce up the place! In Boom™ Cards Christmas Tree Shapes Geometry Self-Correct Digital Resource, learners identify 15 shapes by placing cute decorations onto a tree. In this geometry lesson with audio directions, learners drop and drag the indicated ornament shape onto the tree and press submit. This 15-question assignment includes audio directions and names of shapes. Christmas Tree Decorations Shapes include triangle, square, circle, rectangle, parallelogram, oval, rhombus, circle, trapezoid,