|
| Use 24 multilink
cubes, to make a cuboid with largest surface area
... smallest surface area. |
|
- Calculate the
surface area of cubes & cuboids
- Solve word problems &
investigate in a range of contexts: length, perimeter
& area |
|
surface area
length
width
height
calculate
(rectangular) face
(square) face |
|
| Use Starter activity
to review understanding of surface area. Compare
different methods of working this out for a cuboid
(& cube) |
|
Activity
Suggestions:
1) Investigate how many different cuboids can be
made with 24 multilink cubes
2) Investigate how many different cuboids with same
surface area
3) Extend to compound shapes
4) Derive & use a formula for surface area of
a cuboid, such as: S = 2LW + 2HW + 2LH |
|
| Review methods
of S.A.calculation using one particular shape &
highlight clear, efficient recording methods |
|
|
|
| Draw a compound
shape on board, with measurements in a variety of
units (m, cm, mm); surface area? |
|
problem
solve
solution
explore
investigate
method
results |
|
| Discuss information
needed to solve a problem, using Starter shape &
others |
|
Activity
Suggestions:
(See p 18 - 20) |
|
| What is the minimum
surface area needed to cover your activity book?
Why do you need more than this in practice? |
|
|
