1. Unit B2 Day 1
This unit lasts for 3 weeks

2. We will investigate lines of symmetry in regular polygons
Practice material including multiplying by doubling.
We will investigate lines of symmetry in regular polygons

3. I can investigate a general statement and say whether examples are true or false
I can split a word problem into steps and work out what calculation to do for each step. I can explain what the answer to each step tells me
I can present my solution to a problem, explaining the steps that I took in a sensible order
I can add/subtract decimals in my head by using a related two-digit addition or subtraction
I can find the double or half of a decimal by doubling or halving the related whole number
I can use tables facts to multiply multiples of 10 and 100 and to find linked division facts
I can check whether a calculation is correct and explain how I did this
I can explain whether a shape has line symmetry and whether it has any parallel or perpendicular sides
I can create a pattern that has two lines of symmetry or complete one that someone else has started
I can say whether a triangle is equilateral, isosceles or scalene and explain how I know
5B2

4. £1 =?p 1km =?m 1m = ?cm inverse predict product You divide
To change km into m you divide by?
£1 =?p
inverse
You divide
by ? to change p into pounds.
predict
1m = ?cm
You divide
by ? to change cm into metres.
1km =?m
product

5. X 7
X 8

9. ÷ Date and margin please 1 Practice 2 _ 4 3 3 3 6 4 + 9 8 9 5 _ 1 9 6X 4 + 9 8 9 5 _ 1 9 6 X 7 8 23 9
round to the nearest
100 1
345.78
1267 2 4 23 1 8

12. 245 17 43 63 67 21 x x x 34
x 3
356 3 29
x 3 x

13. 2, 5, 8,....,....,.....,....,
Can you continue the sequence?
46, 57, 68, ....., ,

14. Stand up if your number is divisible by the number called.
You have all been given a number 2, 4, 5, or 10.
Stand up if your number is divisible by the number called.

15. 16

16. 15

17. 30

18. 40

19. 18

20. 35

21. 20

22. 12

23. 100

24. 50

25. 120

26. Is there a number that all of you stood up for?

27. ? ? Find lines of symmetry of regular shapes, by folding shapes
What do we need to do for success? ?
Most of us should
All of us must
Some of us could
Record facts about lines of symmetry and the number of sides a regular shape has
Find lines of symmetry of regular shapes, by folding shapes
can investigate the lines of reflective symmetry in a variety of polygons

28. What is meant by reflective symmetry?
How many lines of symmetry has an equilateral triangle?
How many lines of symmetry has a square?

29. Why does a square have diagonal lines of symmetry when a rectangle does not?

30. You are going to investigate various shapes to see if they have reflective symmetry.
You will need a mirror.

31. Review regular shape Equilateral triangle number of sides
lines of symmetry
number of sides
Equilateral triangle

32. Can you predict how many lines of symmetry a 20 sided regular polygon would have?
Or a 100 sided regular polygon?
Is the same true for irregular polygons?

33. ? ? Find lines of symmetry of regular shapes, by folding shapes
How have we got on?
Most of us should
All of us must
Some of us could
Record facts about lines of symmetry and the number of sides a regular shape has
Find lines of symmetry of regular shapes, by folding shapes
can investigate the lines of reflective symmetry in a variety of polygons

34. You managed to do all your work?
Wow. Well done.

35. Tomorrow we will continue our investigation into lines of symmetry and sides of a regular polygon.

36. Time to pack away please.
But I want more
maths!