Lesson 3 dotty investigation

Entry Activity – Half all the numbers below

Half

4010

95

678951

6

71

32

Entry Activity – Answers

Half

205

47.5

33.5

44.525.5

3

35.5

16

Using your planners show me how you found this

Today I will learn to construct shapes with set perimeters and calculate the area Level 5

Challenge Objective: Find formulas to describe relationships Level 6

Key WordsEquation, Generate, Sequence, Unknown, Perimeter,

Area, Describe, Formula

•All will construct shapes with set perimeters and find the area•Most will find the relationship

between the area and perimeter•Some will write it as a

formula

Who can remember what these words mean...

Sequence

Area

Perimeter Describe

Unknown

Generate

Choose 1 and write down it’s meaning

Level 5/6

Leve

l 5

Level 5

Leve

l 5

Level 6

Peer Assessment

On your partners work, mark the work they have done and write:

• 1 thing that they have done well• 1 thing they need to do to improve

Get ready we will be sharing!

Answers

Using your planners show me how you found this

Today I will learn to construct shapes with set perimeters and calculate the area Level 5

Challenge Objective: Find formulas to describe relationships Level 6

Key WordsEquation, Generate, Sequence, Unknown, Perimeter,

Area, Describe, Formula

•All will construct shapes with set perimeters and find the area•Most will find the relationship

between the area and perimeter•Some will write it as a

formula

Extension Task – Level 6

Repeat these investigations but use an odd number of dots on the perimeter of each

shape.

Answers - Extension

Formulae are the same for odd

numbers as for even numbers.

Using your planners show me how you found this

Today I will learn to construct shapes with set perimeters and calculate the area Level 5

Challenge Objective: Find formulas to describe relationships Level 6

Key WordsEquation, Generate, Sequence, Unknown, Perimeter,

Area, Describe, Formula

•All will construct shapes with set perimeters and find the area•Most will find the relationship

between the area and perimeter•Some will write it as a

formula

PlenaryPick a box from below to copy and

complete in your book

Today the most important thing I have

learned is...

Next time I do a this topic I will make sure I...

One thing I need to remember from today's

lesson is...

One thing I have found hard today is...