Thrust Investigation

 One day at extension class we did an investigation
about thrust. We taped a straw on top of a ballon

with a line of string going through it. The ballon was blown up too as much as we wanted. When Mrs Telea said go we let go off the ballon and investigated how far it went. After that we made tweaks to see if it would go further then before.

Maths Stratergy

1. The world record for throwing a cellphone in 2012 was 102.68 metres. James attempted to beat the record but only managed to throw 97.89m. How much was he short by?

102.68 - 4.79 = 97.89

102.68 - 2.68 = 100.00

100.00 - 2 = 98

98 - .11 = 97.89

2.68 + 2 + .11 = 4.79

2. Sione uploaded a presentation to his blog but it was too big. In the HTML code he saw that the size was 920  pixels wide by  648 pixels high. He thinks if he reduces it to ¾ of the size it is, it should fit. What dimensions does he need to change in the HTML code?

230 pixels wide

920 divided by 4 =

(92 divided by 4 = 4 x 20 = 80  4 x 3 = 12 4 x 20 + 4 x 3 = 92)

4 x 200 = 800

4 x 30 = 120

4 x 200 + 4 x 30 = 920

230 x 4 = 920

162 pixels high

648 divided by 4 =

(64 divided by 4 = 4 x 10 = 40, 4 x 6 = 24, 4 x 10 + 4 x 6 = 64)

4 x 100 = 400

4 x 60 = 240

4 x 100 + 4 x 60 = 640

4 x 2 = 8

640 + 8 = 648

162 x 4 = 648

3. Tiaki is fixing part of his fence. The pickets he needs are .68m long each. How many metres of timber does he need to cut up 45 pickets?

If the timber comes in 5m lengths only what is the minimum amount of lengths he needs to have enough for 45 pickets?

The timber is $3.55/m. How much will he have spent?

Answer: 30.6

Strategy: 0.68 X ? = 45

0.68 X 10 = 6.8

40 = 27.2

0.68 X 5 = 3.4

27.2 + 3.4 = 30.6

4.  Julia is an artist. She has been painting a huge mural for the town centre. For the main colour she used a 20 litre pail of white mixed with a 10 litre pail of blue. Unfortunately she ran out of paint before she finished the mural. She thinks that she will only need 5 more litres in total to finish. How much blue and white paint does she need to mix up to get the 6 litres of paint she needs that is exactly the same colour she has been using?

(1+2 = 3 , It is a ratio problem.)

Future Aspirations

  Last Thursday there were some special guest who came over to our school to inspire us. There were 5 guests, Mosa Mafileo, Emma Brown, Tristan Pang, Aysha Hohaia and Caine Warren. Mosa Mafileo a 18 year old inspired me the most out of all the five. His job was very interesting, because he was the Junior adviser for Len Brown.

 My one and only goal is to become a Video game programmer. I’d like to work for Infinity Ward to make games like Call of Duty. I want to go to university to study computer science and mathematics. Making a game that people can enjoy and have fun on,is what I want to do for others.

Hardest Question Pt 2

In the hop, skip and jump (Triple Jump) the record for  men is 18.29m whereas the record for women is 15.5m. How much longer is the men’s record than the women’s.

15.5+.09=15.59

15.59+.7=16.29

16.29+2.=18.29

2.79

Hardest Questions

 For me this question is the hardest. There are 24 classes at school. ⅜  of them are Year 1 or 2 teams. How many is this?

This is my strategy  

⅛ of 24=3

So umm that means 3x3= 9 which is the answer