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## Self-Directed Learning (I)

## when we meet... in Term 3

## Term 3 Week 3 Maths Test

## Topics

## Announcement: Self-Directed Learning Modules

## Useful Links

## Maths - General Links

## Resources and Video Clips about NUMBERS

*Source: Teacher.TV (**http://www.teachers.tv/**)*

**Safety In Numbers** Mathematician Marcus du Sautoy reveals how the language of maths is used to construct the complex codes that we encounter in everyday life. Learn about the amazing use of PRIME NUMBERS in our everyday life.

(http://www.teachers.tv/video/3501)

**Zero to Infinity **In this programme, mathematician Marcus du Sautoy explains how humans have developed numbers for their mathematical needs. Hear about the Invention of **Zero** and have a better understanding of **Infinity**. Can we divide a number by Zero? Is *Infinity* the biggest number? (http://www.teachers.tv/video/3500)

*Source: The Guardian (Guardian.co.uk), 4 March 2005 *

Article:**The Magic Number** by Simon Singh

Found!!! The biggest**Prime Number** yet...

Click HERE to read article.

## Resources and Video Clips about FRACTIONS

*Source: Teacher.TV (**http://www.teachers.tv/**)*

**Cutting a Cake** Have you wondered how to divide a cake into 12 pieces using only 4 cuts?

(http://www.teachers.tv/video/43462)

Source: Teacher.TV (http://www.teachers.tv/)

**Putting Reciprocals into Practical Use** Reciprocals help us to order "difficult" fractions! (http://www.teachers.tv/video/43452)

## Resources and Video Clips about GEOMETRY

## Video Clips about Data Handling

## Co-Authors

Year 2010

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ODD week

Tuesday 0800-0900

Thursday 0900-1000

Friday 0900-1000

EVEN week

Tuesday 1430-1530

Thursday 0800-0900

Friday 1030-1130

Tuesday 0800-0900

Thursday 0900-1000

Friday 0900-1000

EVEN week

Tuesday 1430-1530

Thursday 0800-0900

Friday 1030-1130

The following topics will be covered in the Maths Test

Chapter 4: Introduction to Algebra

Chapter 5: Algebraic Manipulation

Chapter 9: Ratio, Rate and Speed

Chapter 16: Data Handling (including Mean, Median, Mode)

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This term, we have earmarked 2 sub-topics for you to learn on your own... own time own target (to be completed by Term 1 Week 9).

**Chapter 9.2: Average Speed **

You are expected to complete sub-topic by 15 May 2010. A Pop-Quiz has been scheduled on 18 May 2010 (Tuesday).

**Chapter 9.3: Speed**

Apart from textbook and workbook, recommended resources and learning activities will be delivered through the AceLearning Portal and the Maths Blog.

**As these 2 sub-topics are not going to be covered in the class, please check/clarify with Ms Loh (Face-to-face or virtually) when you are in-doubt.**

You are expected to complete sub-topic by 15 May 2010. A Pop-Quiz has been scheduled on 18 May 2010 (Tuesday).

Apart from textbook and workbook, recommended resources and learning activities will be delivered through the AceLearning Portal and the Maths Blog.

(http://www.teachers.tv/video/3501)

Article:

Found!!! The biggest

Click HERE to read article.

(http://www.teachers.tv/video/43462)

Source: Teacher.TV (http://www.teachers.tv/)

Source: Teacher.TV (http://www.teachers.tv/)

**Seaside Triangles** - How properties of triangles become useful in real world applications.

(http://www.teachers.tv/video/37910)

**Surface Area of an Octagon** - Step-by-step process of working out the area of an octagon

(http://www.teachers.tv/video/43382)

(http://www.teachers.tv/video/37910)

(http://www.teachers.tv/video/43382)

This video clip, Statistics: Decisions Through Data shows how data (in the study of Statistics) has enabled mankind to make big and small decisions, that either impact the individuals or the bigger community.

Look out for the following segments:

- Describing Data

- Producing Data

- Conclusions from Data

~~~~~~~~~~~~~~~~~~~~~~~~~~

Watch this video clip The Business of Farming

*Source: The Futures Channel (**http://www.thefutureschannel.com/index.php**)*. Note: It may take a while to stream the video clip

*This video about...* There are more than 350 different commodities grown in California. In a state that provides approximately 15 percent of U.S. agricultural products, statistics are an important tool for agricultural economists to keep up with supply and demand. Let's hear how the statistics help farmers to make decisions!

Look out for the following segments:

- Describing Data

- Producing Data

- Conclusions from Data

~~~~~~~~~~~~~~~~~~~~~~~~~~

Watch this video clip The Business of Farming

One bar is missing from the histogram. 6 students gets $2 for pocket money daily. Most students get $3 for pocket money daily. Equal number of students received $1 and $4 for pocket money daily. Less students gets $5 for pocket money daily. The total amount of money received by the 33 students as pocket money daily is $96. The average amount of money received by each students for pocket money is $3.

ReplyDeleteOne data bar is missing from the histogram, to get the data of it here is what we must do.

ReplyDelete1)33-(7+8+7+5)= 6

The majority of the students collects $3 for pocket money every day.

There is an equal amount of students who collect $1 and $4 for pocket money daily.

The minority of the students collects $5 for pocket money every day.

The total amount of pocket money collected by all students is

(1x7)+(2x6)+(3x8)+(4x7)+(5x5) = $96

The average amount of money received by each student is

$96/31≈$3

Interpret: One bar is missing from the histogram.

ReplyDeleteThis Histogram shows the amount of pocket money each pupil gets.

However, after adding up the total number, it shows that there are only 27 pupils instead of the original number which is 33.

So, we can determine that the number of pupils which receive $2 daily for their pocket money is 33 - 27 = 6.

$(1x7)+$(2x6)+$(3x8)+$(4x7)+$(5x5) = $96

One bar is missing from the histogram. The average amount each student get is $3. The total is $96

ReplyDeleteOne bar is missing from the histogram above. After deducting 27 from 33, we can get the number of students who get $2 daily for their pocket money, which is 6. The total amount is $96.

ReplyDeleteSome information is missing from the histogram. Most students get $3 a day

ReplyDeleteThe information missing from the histogram has no frequency there = no one has that specific amount of pocket money

ReplyDeleteData for the amount of $2 is not recorded even though it should have some frequency as 33 students were asked and from the other 4 choices, there was only a frequency of 27. Thus, 6 students should have $2 for their pocket money.

ReplyDeleteThe number of students who have $1 and $4 for their pocket money are the same. The number of students who have $3 for their pocket money is the greatest while the number of students who have $5 for their pocket money is the lowest.

ReplyDeleteMost students have $3 for their pocket money. There is an equal number of students who get $1 and $4 for their pocket money. The frequency for the amount of students who get $2 is not recorded, as the total number of students recorded is 27, but 33 students were asked about their pocket money.

ReplyDeleteThe number of students who receive $2 pocket money is not recorded in this histogram. The number of students who receive $1 and $4 pocket money are the same.

ReplyDeleteThere is a data missing in the histogram above which is that there are 6 students who get $2 as their allowance.

ReplyDeleteThe total number of students who were involved in the survey is 33 and the total amount of allowance is $96. The average amount is $2.91.

the data for students that have $2 for pocket money is not collected. It should be 6 as the total so far is 27 but the actual total is 33. so:

ReplyDelete33 - 27 = 6

Thus there should be a bar of 6 in the histogram.

There is data missing as the histogram only shows that there were only 27 students whereas it stated that there is a total of 33 students.

ReplyDeletethere is some information missing for the $2 bar. The missing data is 6 students as the total is 33 students but the current total is 27. 33-27= 6

ReplyDelete7 students receive $1 as pocket money daily. 8 students receive $3 as pocket money daily. 7 students receive $4 as pocket money daily. 5 students receive $5 as pocket money daily. However as there are only 27 students counted in the histogram but there are 33 people who took the survey, there should be a missing bar, which should be 6 students receive $2 as pocket money daily.

ReplyDeleteDaily, 7 students have $1 as their pocket money, 6 students have $2 as their pocket money, 3 students have $8 as their pocket money, 4 students have $7 as their pocket money, 5 students have $5 as their pocket money. Realised that the second bar is missing, and since the title states "33 students", we take 33-27(which is the total amount) to get 6. Therefore 6 students have $2 as their pocket money daily.

ReplyDeleteMost students receive $3 as their pocket money daily, the equal number of students receive $1 and $4 daily, 6 students receive $2 daily although it is not shown in the histogram. 5 students receive $5 daily.

ReplyDeleteThe average amount of money each student gets daily is $3 (1 significant figure)

The most common amount of pocket money received is $8

ReplyDelete