Topic outline
- General
General
- Topic 7
Topic 7
Geometry: Perimeter, Area, and Volume
In this unit, students will:
Find the area of right triangles, other triangles, special quadrilaterals, and polygons by composing
into rectangles or decomposing into triangles and other shapes; apply these techniques in the context of
solving real-world and mathematical problems.
Find the volume of a right rectangular prism with fractional edge lengths by packing it with unit cubes
of the appropriate unit fraction edge lengths, and show that the volume is the same as would be found by
multiplying the edge lengths of the prism. Apply the formulas V=lwh and V=Bh to find volumes of right
rectangular prisms with fractional edge lengths in the context of solving real-world and mathematical
problems. Represent three-dimensional figures using nets made up of rectangles and triangles, and use the nets to find the surface area of these figures. Apply these techniques in the context of solving real-world and mathematical problems.Essential questions:
- Why do different shapes have different formulas to describe the area?
- How are a net and a 3D figure related?
- How can the surface area of an object be used in real life?
- Topic 9
Topic 9