• Geometry: Shape - (Congruent, Similar,) Transformations - (Rotation, reflection, Translation,) Position, Angle
• Measurement: Perimeter, Area
• Algebra: Pattern
Students will explore the properties of different 2D figures. Consider the language associated with triangles.
Similar triangles are the same shape. Corresponding angles are equal and corresponding sides are in proportion.
… and types of triangles.
Triangles may be named by their side lengths, angles or both.
… and quadrilaterals.
… and polygons.
Perimeter / Area
When first learning about perimeter and area it is simpler to create figures that do not have oblique lines. That is:
Students can work out the perimeter of each figure they created by counting the segment between pins:
Keeping the line segments vertical or horizontal will make calculating perimeters much simpler. For example, this figure has a perimeter of 12 units.
Typical Classroom Requirements
An ample supply of bands of different lengths will be required if a variety of tasks are to be completed. If working in small groups, with students rotating through various task centres then four Geoboards would be sufficient.