Year 9 Mathematics at GHS

Overall, this year has been a roller coaster of different things. This year I developed a lot of new skills, but I believe I haven't gotten any better at mathematics. I now know a few extra things like how to calculate the length of the hypotenuse on a triangle, but overall I didn't get much better at mathematics as I was just relearning things I already knew.

Junior Sports Activity Data Display

Math this Term

This term in mathematics we have been studying basic algebra. One activity we did was expanding brackets. This is my presentation on expanding single brackets.

Algebra Questions

How Many Poi In The Box?

WALT: Carry out a statistical investigation.

I decided to do mine on how many poi were in the box.

>I asked Ruma M and Ruma J to guess the amount of poi in the box.

>I found it interesting that out of all the guesses only 2 people guessed in the range of 27-29 where there were 8 guesses in the 24-26 range.

>The range 27-29 was closer to the actual amount of poi, In total there were 33 poi in the box.

>I am interested in how much people think the box weighs as the amount of poi could be deceiving.

WALT: Calculate the percentage of a quantity.

Word Problem: A bike costs $70. On a huge sale it only costs 20% of the original price. How much did it cost?

Home Links - Frequency Chart & Pie Graph

Ruma J's Favourite Animals

WALT: convert difficult fractions to decimals and percentages. We carried out a survey on the class. I choose to do mine on the Favourite animals in Ruma J. Here is what I found.

Dividing Fractions

We have been learning to answer divide fractions that are written in word questions.

Home Links - Area Of A Circle

For home links I practiced finding the area of circles.

Find The Area Of Circles

WALT: Find the Area of Composite Shapes

Division Word Problems

WALT: Write division word problems & solve them using a variety of strategies.

Multi Digit SWF Division

We have been learning how to solve multi-digit standard written form division. Here is my video of me explaining how to solve this question.

Home Links - Wk 3

For Home links this week I practiced my division.

Budgeting For A Trip

We have been learning about budgeting. We had a budget of 6-8 thousand dollars and had to plan a holiday. I decided to go to Malaysia. Here is my creation.

Home Link Wk 8

Math Riddle

We have been revising our knowledge about addition and subtraction. We were asked to create a riddle that could be printed out and used as an activity page. Here is mine.

Subtraction Standard Written Form

WALT: Solve Addition Problems Using Standard Written Form

We are learning about Standard written form. Our task was to make word questions and got a partner to solve them using standard written form. Click Here to see Prakriti's Blog.