Saturday 15 June 2013

PYTHAGORANS WEEK 7

MONDAY
Open ended maths question to start the week



These crime statistics are nationwide, not just Nelson.

(Just in case you are wondering "where is the maths in this Mr Phillips", your ability to analyse data and come up with conclusions about that data is at the essence of Mathematics. It is the same as working out 4x7= 28, because you have identified the data and made some informed strategic thinking to get the answer.)










LEARNING INTENTION
To use compensation from tidy numbers to help me solve division problems


TUESDAY




LEARNING INTENTION
I am learning to use compensation from tidy numbers to help me solve division problems


LEARNING INTENTION
to use reversibility to help me solve division problems

Okay and just for a change of scene, try these Khan Academy division exercises with remainders
CLICK HERE


If you get stuck watch the video below





Then try this
LINK RIGHT HERE

I don't know if you guys know about the scratchpad, but it is really great and will make your working a whole heap easier on the khan academy

 Its down the bottom of the page

Where it says "show scratchpad", will make a bit of a difference with your working out of these problems!


EUKLIDS WEEK 7

EUKLIDS

MONDAY

Triangle
Area = ½ × b × h
b = base
h = vertical height
 Square
Area = a2
a = length of side
Rectangle
Area = w × h
w = width
h = height
 Parallelogram
Area = b × h
b = base
h = vertical height
Trapezoid (US)
Trapezium (UK)
Area = ½(a+b) × h
h = vertical height
 Circle 
Area = π × r2
Circumference = 2 × π × r
r = radius
Ellipse
Area = πab
 Sector
Area = ½ × r2 × θ 
r = radius
θ = angle in radians

You will need to write out these formulas in your books as it will really help when you are solving the equations.


(For some of the problems, especially those using π (the greek letter Pi which is the ratio of a circles circumference to its diameter or θ (the greek letter Theta which represents an angle)

Geometry, what a blast. 





Thursday 13 June 2013

EUKLIDS FRIDAY

Euklids

To multiply decimal numbers:
  1. Multiply the numbers just as if they were whole numbers.
  • Line up the numbers on the right - do not align the decimal points.
  • Starting on the right, multiply each digit in the top number by each digit in the bottom number, just as with whole numbers.
  • Add the products.
  1. Place the decimal point in the answer by starting at the right and moving a number of places equal to the sum of the decimal places in both numbers multiplied.

See how it moves three places across because in the question there were three decimals places 2.77 has two and 2.8 has one. 

37.7 x 2.8 =
3.77x2.8=
                                                            3.77x 28=
                                                          3.77 x 0.28=
Try these easy ones first

0.1
× 3.0

         
2:
4.0
× 0.6

         
3:
8.0
× 0.4

         
4:
0.3
× 5.0

         
5:
0.2
× 2.0

         
6:
5.0
× 0.1

         
7:
1.0
× 0.2

         
8:
0.8
× 7.0

         
9:
0.6
× 8.0

         
10:
0.5
× 5.0

         




         
Once you have completed these I have a worksheet for you sitting on my desk, so come and show me your answers and we can get you the worksheet. 


Tuesday 4 June 2013

hypatias week 6




Why not give this a try and see if you can work out

8x8=
9x7=
9x6=

Did this method help?

Okay we are going to use the strategy compensation to solve multiplication problems





And we'll quickly revise 






LEARNING INTENTION
to identify place value in numbers that involve decimals

Decimal Place Value: Decimal Place Value


So what is the place value of 5 in the number
654.213?

What is the place value of 1 in the number
654.213?

What is the place value of 7 in the number
845.769?

What is the place value of 9 in the number
845.769?

Please write down the questions in your books.

Once you have completed this, write down the two numbers in word form. If you are unsure of how to do this, have a watch of this resource.

FRIDAY
LEARNING INTENTION
Put decimals on a number line

This is a quick warm up and a quick refresher of things you have already learnt. 
Spend five minutes practising on THIS LINK


Points on a number line: Points on a number line


Okay now try it for yourself

draw this number line into your book



Make sure there is an even space between each of the numbers on your number line.

Place the following numbers on the number line. If you get stuck, refer back to the video.

0.5, 2 1/4 , -4.3 , 3.9


Once you have completed this number line, show it to MR PHILLIPS and then you can continue on your xtramaths


Multiply
1:
5
× 8

      
2:
8
× 13

         
3:
14
× 14

         
4:
3
× 15

      
5:
4
× 12

      
6:
12
× 14

         
7:
3
× 11

      
8:
7
× 14

      
9:
5
× 6

      
10:
15
× 13

         
11:
3
× 3

   
12:
14
× 6

      
13:
13
× 13

         
14:
15
× 15

         
15:
14
× 9

         

16:
12
× 3

      
17:
14
× 5

      
18:
14
× 13

         
19:
3
× 14

      
20:
12
× 4