Monday, October 11, 2010
Thursday, October 7, 2010
2) The questions are divided into 3 Categories, namely, Speed and Time, Area and Perimeter, and General questions.
3) Students are required to choose 1 question from each category, work out its solution and video their explanation and solution of the question using Photo Booth.
Monday, September 27, 2010
Sunday, August 15, 2010
Option D is correct.
A square and a parallelogram are quadrilaterals as they are both 4-sided.
Opposite sides of a square and a parallelogram are parallel:
The quadrilateral is a trapezium. A trapezium has one pair of opposite sides equal in length, which is the pair of lines that are not parallel to each other, and the other pair not equal in length, which is the pair of lines that are parallel to each other. It also has a pair of opposite angles that are supplementary.
No, I do not agree with the statement. The lines of a parallelogram are not of equal length, only the opposing lines are of the same length, while for the square, all lines are of equal length. Therefore I do not agree that all parallelograms are of equal length.
Saturday, August 14, 2010
Question 1 by Elgin Low (the post below not named is also mine, please see the comment inside to determine question)
A rhombus is just a quadrilateral with equal length. It does not mean that the angles of the 4 sides have to be the same. However, a rhombus is not a square as that means that all rhombuses are squares. Squares are quadrilaterals with 90 degrees on each of its four sides. Rhombuses have different angles that do not for 90 degrees. They however, can have any random angle as long as all the angles equal to 360 degrees. A square can be a rhombus as its angles equal to 360 degrees, and its sides are of equal length.
My answer: all of the above are correct.
- A quadrilateral is a figure with 4 sides. Both a parallelogram and a square have 4 sides exactly.
- Opposite sides of a square and parallelogram are equal. This is proved on a square as all the sides are 90 degrees. For a parallelogram, proof that its sides are parallel, is that each pair of sides are all of equal length.
- A trapezoid does have only 1 pair of parallel lines. It is a figure that has one pair of parallel lines of equal length, and 2 other sides with unequal length.
Friday, August 13, 2010
Q 2 : Options A, B, C and D are all correct. A is correct (as you can see in the picture)
Q 3 : The figure is a trapezium. The two sides that are equal are the sides that are not parallel to each other, the sides that are parallel to each other is the sides that are not of equal length and in this way, the opposite angles will sum up to 180.
Q4 : Not all parallelograms are squares. Evidence : this definitely does not have four equal sides
Q5 : BFDE is a parallelogram because line BC and AD are equal, so when you draw a new line from B to E and D to F, those two are same in length and is parallel
A square is a rhombus because it fills all the properties of a rhombus. The square has two pairs of opposite sides that are parallel and all its sides are of equal length. A conventional rhombus is not a square because the angles of a rhombus are not right angles.
I think that the statement D is correct. A square and a parallelogram both are four sided figures so they are quadrilaterals. The opposite angles of a square and parallelogram are equal so the opposite sides are parallelogram and a trapezoid indeed has a pair of parallel sides.
Not all parallelograms are squares because not all sides of a parallelogram are equal and one of the properties of a square is that all the sides have to be equal.
Both the square and parallelogram have opposite sides that are equal.
A trapezoid has 4 lines, and only 1 pair is parallel.
Q3. It is a trapezium. If you add up the 2 opposite sides of a Trapezium, it would be equal to 180 degrees. Its top and bottom lines are also parallel to each other.
Q4. I do not agree with the statement. Parallelograms can have different lengths and can still be called a parallelogram. Whereas in the case of squares, they need to have equal lengths for all sides.
BFDE is a parallelogram as we know that AD is parallel to BC, so DE is definitely parallel to BF. Since BC and AD are of the same length, then BE and DF should be parallel too. Thus, BFDE is a parallelogram as it has 2 sets of parallel sides.
D) All of the above
Squares and parallelograms are quadrilaterals as both have 4 sides each.
The opposite sides of a square and parallelogram are parallel, because as far as they go on, they will never meet.
A trapezoid has only one pair of parallel sides, because the other pair is not parallel.
A square is a rhombus but a rhombus is not a square.
All parallelograms are squares.
Friday, July 23, 2010
Monday, July 12, 2010
Monday, June 28, 2010
Thursday, May 20, 2010
Rate allows us to express a quantity as a proportion of another quantity thus enable us to make comparison between different quantity.
Examples of rate being used in our daily life are:
1) Speed of a car, where the distance is measured against time (Kilometer per Hour or Meter per Second)
2) Buying of food and drink, where the price is measured against the weight or volume (Dollars per Kilograms or Dollars per Litres)
3) Frequency of Buses (Number of buses in operation per Hour)
4) Heart Rate (Number of beat per Minute)
The examples of rate in our daily life in countless.....
Thus give 2 examples of the use of Rate in your life and briefly describe how you can make use of these information to help you make better decisions in your life.
Please also refer to your Textbook 1B from Pg 9 to 11 and your Ace - Learning Portal for more materials and examples.
We are back into our study of Algebra....
Like English & Chinese, Mathematics is another form of communication between people and Algebra is an essential part of this language.
Thus, let us now get to find out more about the Algebraic Language...
The Algebraic Language
Friday, May 14, 2010
Friday, May 7, 2010
We are still looking at Statistics at the moment.
Often when we compare data, we heard about people comparing the MEAN, the MEDIAN and the MODE.
Thus what does this terms actually means?
Do an online search on the meaning of MEAN, MEDIAN and MODE and input the meaning under the comment section. Please also include in examples on how to determine the MEAN, MEDIAN and MODE in a data set.
Tuesday, April 13, 2010
Welcome back after the second round of Data collection along Clementi Ave 6.
Here are some of the tasks we are going to complete by today.
1) Uploading of data collected.
Please access the spreadsheet titled "SST 2010 Traffic Data Combined" through the Mathematics Google Site. Only the team member nominated for Data input during the last session can edit the table. The rest of the team members please helped to consolidate the data for your team mates.
2) Examples of Statistical Diagram (Bar Chart, Pie Chart & Line Graph) found in daily life
The wallwisher is an online Post-IT board.
Find one example of either a Bar Chart or a Pie Chart and another example of a Line Graph. Give a short descriptions on the diagram you have selected.
Thursday, April 8, 2010
The job of data collection is definitely not an easy one. It requires detail planning and thinking.
Based on your experience today, I will like you to think about the following questions and post your responses under the Comment section.
1) What are some of the difficulties you have encountered today?
2) What some of things you could have done better?
3) How do you ensure that the data you collected is as accurate as possible?
Monday, April 5, 2010
Please pay close attention to the assessment requirement.
I have also put up the Data Collection Map for the class.
View 107 Data Collection Map in a larger map
Thus what exactly is Statistics?
Please go through the 2 videos posted below.
Thus do you have a better understanding of Statistics?
In your own words,
1) Explain what do you think Statistics is all about?
2) How can you apply Statistics in your decision making?
Please post your reply under the Comment section by 9 April 2010 (Friday)
Thursday, March 4, 2010
Thursday, January 14, 2010
In your groups,
1) List out some of the Ancient Civilizations that have once existed in our world.
2) Decide on one Civilization that your group has listed out and carry out a research on the number system that was associated with this civilization.
3) Using a 5-slides Keynote presentation, develop a presentation that describe the development history of this set of number system, describe the number system and depicts digit from 0 to 9, the number 10, 100 & 1000.
4) Hence, develop a simple worksheet using Pages, which required your friends to convert numbers from your choice of number system to our present Hindu - Arabic number system. You should have 4 questions that involved a 2-digits number, 4 questions that involved a 3-digits number and 2 questions that involved a 4-digits number.
5) Please submit your presentation slide and worksheet by 25 January 2010.
6) Please acknowledge all information that the team has taken from the Internet. The method of acknowledgement is (a) The Title of the website. (b) The URL. (c) The Date and Time where the information was view.
Monday, January 11, 2010
Please note that I will be conducting a review assignment in class on 15 January 2010.The topics involve are those you have come across during your PSLE.The review assignment will last for 30 minutes and please note that no calculators will be allowed for this assignment.
Welcome to a brand new year.Before we start our lesson, I will like you to think of the following questions as an individual.
1) What are your success / joys you have experienced in the learning of Mathematics in your primary school?
2) What are your fear / difficulties you experienced in learning Mathematics?
3) What are your expectation of me as a Mathematics Teacher?
Welcome to the Maths Blog for the class. Please become a follower of this blog as we will be using this blog for our discussion beyond curriculum. I have the following rules that I hope everyone in the class can observed.
1. Everyone must participate in the discussion.
2. No one shall put down another person on the blog.
3. Be respectful and responsible in your choice of words.
4. Use of proper English in your postings.