WALT: find the surface area of cubes and cuboids (Level 5)Unscramble these mathematical words!

asurcef buceuodcbi

ephdt glnehtuolevm

10 Quick Questions x 2!

WALT: find the surface area of cubes and cuboids (Level 5) To succeed: Be able to find the surface area of 3D shapes.

To excel: Be able to calculate the volume of 3D shapes .

WILF: (What I’m looking for)1. Know how to find the area of a single side.

2. Know that surface area is the total area on the faces of the shape.

3. Be able to apply knowledge of area and surface area to calculate the surface area of real 3D shapes.

Find the area of these shapes…

Now what about SURFACE area?

Let’s try it!

How might it be easier to calculate?What could we draw to help us?

Let’s try it! What about a cuboid? What makes this different?

How do you feel about…

HIGH FIVE!

1- I have no idea what I’m meant to do.

2- I think a get a part of

it but I’m really

confused.

3- I get some of it, but it

but I’m a little confused.

4- I get most of it- there

are a few bits I don’t get.

5- I ‘get it’ and I find

these questions

easy.

Your job… You are a very important business person who

works for a biscuit company.

You and your team need to find out which packaging is going to cost the least to make.

How will you know which packaging will cost the least?

CHALLENGE: If the cost of cardboard is £0.95/cm2 how much will each box cost?

Try it yourself…

Place your post-it on the scale…

If you feel confident about area and perimeter place your post-it closer to 10.

If you feel okay about it but you think you need more practice place it in the middle around 5.

If you feel confused about what area and perimeter are place it closer to 1.

Exit Cards… Before you leave the classroom you need to write

down on a card: 1. Your name.

2. Explain in a few sentences how surface area is found.

3. Anything you had trouble with in the lesson.