Here are some tips on Logarithm for additional mathematics students:

## PSLE FRP Math: Why cross multiply?

25 JulA subscriber of http://www.ilearnbywatching.com asked:

Hi! My daughter has been watching some of the FRP videos and the most recent one she is looking at is the P6 Set B Rev Up. She realised that "cross multiplication" occurred many times. She does not understand why she must cross multiply. Is that a special method? How does it work? I would be grateful if you could help us. Thank you very much! Warm regards Kelly :)

Our reply:

–This part of the working for our students will be the mechanical part of the working after the set up. A quick way to understand is: 1u + 10 / 5u – 30 = 1/3

So essentially you are cross multiplying the above.

–You could understand it through equality …meaning: 2/3 = 4/6, cross multiply you get 6X2 = 3X4 . So cross multiplication holds true.

If you are drawing bar models, you could explain it with parts and units. So 3 of (1u + 10) equals 1 of (5u – 30). You can draw the 1u as a rectangular block.

Thank you so much!! My daughter understands the bar model explanation. She says she now knows how to use the cross multiplication method. Thank you and the teacher very much for helping her. Warm regards & with gratitude Kelly :) We are happy to reply to our subscribers.

## Selection of Speed Math Problems for PSLE Preparation

14 JunTeacher Persis’ selection of Primary 6 math problems on speed with video solutions. This might challenge you a bit.

## Challenging Primary 6 Math Problems on Volume

11 JunTeacher Persis’ selection of Primary 6 math problems on volume with video solutions.

## Secondary Maths Classes in June

2 JunWe are opening maths revision sessions (and hopefully science…) this June holidays. Per session will be based on particular topics in the secondary maths syllabus with a *seat capacity of only* **3 or 4 **(*min. 2 pupils* to start a session). You may expect selected question analysis, concept elaboration and application in each session. Sec 4s can expect topical questions selected from prelim papers (it’s just 1-2 months before prelims). Do sign up early by arranging registration and payment with us before the sessions are occupied! A session of the same topic may be opened for sign up on another day in June (subjected to our tutors’ lesson schedule). For payment and registration, kindly send your enquiry to admin@matharena.com.sg and upon confirmation and verification through payment procedure, we will register for you and you can just come for the session(s) on the date(s) assigned.

**Disclaimer:** Below is the schedule of the revision session (accurate as at May 26). There will be updates every weekend so do save this link onto your phone (or any tech device) to keep up with the updates.

## Highlights of 2015 June Holiday Programme

23 Apr**SPECIAL MODULES for PSLE Maths**

We have a Special Modules program for P6 pupils who wish to sharpen their skills in following topics:

1. Geometry (include Circles, Area & Perimeter and Angles)

2. Speed

**3 & 5 Jun (Wed & Fri)**

**Time: 3.00 pm to 6.30 pm**

**Fee: $200**

This * 2-sessions special class* is intended for pupils who want to

**Trainer will highlight effective techniques in the solving of these questions. **3 students for this class to confirm opening**

*focus their learning on the 2 major topics of Geometry and Speed.*There will also be special modules for:

**P5 Fusion Math: (M)athlympics Training new!***

**Wednesday to Friday, 3 to 5 June 2015**

**Time: 2.30 to 6.00 pm**

**Fee: $300**

Scope: Number Theory, Geometry, Combinatorics (from past year questions of Annual Mathlympics)

Level: Primary 5

We welcome Primary 4 students to join this training too. Basic algebra approach to be used to train students.

**New Slot! Monday to Wednesday, 8 to 10 June 2015**

**Time: 2.30 to 6.00 pm**

**8 JUNE to 26 JUNE (5-Day Program)**

For single student signing up 1 full course: **10% EBD** **by 10 May 2015**, 5% by 25 May 2015. Sign up today!

**PSLE A* Achievers**

This June, P6 pupils will work on mock papers that comprise of both short and long questions. This is a good time for all pupils to go through a comprehensive revision before the preliminary exams.

As usual, trainer’s explanation of difficult concepts in class is key to helping pupils clarify doubts and misconceptions so pupils are strongly encouraged to ask questions in class.

Practice is the other key ingredient for success in PSLE Math. Hence we are going to have an intensive program that has systematic coverage of PSLE math topics, emphasizes on higher order challenging problems and where pupils’ presentation of solutions will be fine-tuned.

Its almost the last stretch, boys and girls…..let’s stay focused and push on!

**P4 & P5 FUSION MATH TRAINING FOR NMOS **

The Preliminary Round of the National Mathematical Olympiad of Singapore is on 1st July 2015, Wednesday. Top scorers will be invited to the Special Round on 28th July 2015, Tuesday.

We continue our intensive training to help P4 and P5 pupils in their preparation for the coming NMOS competition. Knowledge, understanding and skills will be built up through active teaching and learning in class.

Working on mock papers will also give pupils more exposure to the topics and questions most relevant to the competition.

**P5 Problem Solving Heuristics**

Primary 5 is a crucial period of learning for pupils as they head towards their PSLE next year. As essential skills are taught, pupils build up a stronger foundation and their ability and confidence soar.

We see this in pupils who started their P5 year with us, soaring ahead in their P6 year. We are happy for them, especially those who initially came in with low marks and lacked confidence.

As always, trainers will explain strategies in class but pupils’ attentiveness and diligence in practice is still key to their achievements. Time to work hard, boys and girls!

**Upper Secondary Maths & Science**

Click here for Secondary Maths classes in June

## 2014 NMOS Special Round Training

11 Jul** **The top scorers of the Preliminary Round will be invited to sit for a written paper in the Special Round at NUS High School of Mathematics and Science on **26th July 2014 **(Saturday). The duration of the paper is 1h 30min and it consists of 20 questions (4 marks each for Q1-10, 5 marks each for Q11-20).

Some instructions useful to candidates of the Special Round:

1. Write your answers in the answer sheet provided and shade the appropriate bubbles below your answers.

2. No steps are needed to justify your answers.

3. No marks will be deducted for wrong answers.

4. Unanswered questions will not get any marks.

5. No calculators or mathematical instruments are allowed.

**Math Arena** will be conducting NMOS Special Round Training for pupils in the coming week.

**Venue: Math Arena**

(Tampines Street 45, Block 488B #B1-147, Singapore 521488) .

Bus 28 stop at Blk 489B.

Buses 28, 293 at Blk 489A.

Bus 29 stop at Dunman Secondary.

**Date: 14 Jul (Mon), 16 Jul (Wed), 21 Jul (Mon)**

**Time: 6.00 – 9.00 pm**

### Course Fee: $330

**This course will mainly cover selected high-order thinking skill questions from the following topics:**

1. Number Theory, Counting and Divisibility

2. Rate and Speed

3. Geometry

4. Fraction, Percentage and Ratio

**Our Opening Hours (School Term):**

Tuesday to Friday 3.30 pm to 9.00 pm

Saturday 9.00 am to 5.00 pm

Sunday 9.00 am to 4.00 pm

Closed on Public Holidays

Should you have any enquiry regarding time schedule or course registration, please feel free to call to speak to Lilian or Bosco at 6783 3218, 6781 9325 or 8121 6628, or simply email us at admin@matharena.com.sg.