Chapter 9: Activities and Lessons

Activity Name Activity Description
Angles Students practice their knowledge of acute, obtuse and alternate angles.
Floor Tiles Students learn about tessellation on quadrilateral figures by dynamically changing the shape of the quadrilateral through dragging corners.
Tessellate! Students deform a triangle, rectangle or hexagon to form a polygon that tiles the plane. Corners of the polygons may be dragged, and corresponding edges of the polygons may be dragged. Parameters: Colors, starting polygon.
Surface Area & Volume Students manipulate dimensions of polyhedra, and watch how the surface area and volume change. Parameters: Type of polyhedron, length, width and height.

Lesson Name Lesson Description
Length, Perimeter and Area Introduce students to length, perimeter and area.
Lines, Rays, Line Segments, and Planes Introduce students to lines, rays, line segments, and planes.
Angles Introduces students to acute, obtuse, and right angles as well as alternate interior angles, alternate exterior angles, vertical angles, and adjacent angles.
Quadrilaterals Introduces students to quadrilaterals, with an emphasis on parallelograms, rectangles, and trapezoids as well as the characteristics that define each type of quadrilateral.
Surface Area and Volume Introduces students to the concepts of surface area and volume.
Geometry in Tessellations Explores lines, planes, angles and polygons in tessellations
Symmetry in Tessellations Examines plane symmetry