Position and Location

How to Use a Compass

There are four cardinal directions. North, South, East and West.

The Earth has a magnetic North Pole and that the needle of a compass always points toward the north.

The various parts of the compass are

*the magnetic needle,

*orienting arrow,

*direction of travel arrow,

*rotating housing and base plate

parts of a compass

parts of a compas

 

 

 

 

 

 

 

 

 

2. How to set a bearing, or use a compass to walk to reach a given location.

Hold the compass in front of you, completely flat, with the direction of travel arrow pointing in the desired direction of travel.

Now rotate the housing dial so the orienting arrow matches the direction of the north-pointing magnetic needle.

You can use the bearing to determine which way to go to reach their destination, as well as which direction they need to get back to the starting point.

3. The challenge is to take a three-leg compass walk.

Mark off a starting point and set  compasses to 360 degrees, which is north.

Now sight a landmark due north and walk 20 paces.

Next, set the compasses to 120 degrees and walk another 20 paces;

then,  set the compasses to 240 degrees and walk another 20 paces.

This should take you in a full triangle and you should end up very close to the starting point.

Maps and the Globe

Longitude and Latitude Screen shot 2014-10-29 at 5.11.53 PM Screen shot 2014-10-29 at 5.12.00 PM

Mathletics- It was a good week!

CONGRATULATIONS GIRLS AND BOYS!

Last week was a great week for MLY on Mathletics.

It started off on Monday when we had a little bit of extra time with the netbooks.

We achieved our goal for this year.

WE MADE IT TO THE HALL OF FAME FOR

TOP 50 AUSTRALIAN AND WORLD CLASSES.

Mrs Lynch was very chuffed because we have tried other weeks but we could never make it the the top class in the world.

Our success continued during the week.

Our total points amounted to 71,664- MLY’s best score for one week.

Three students earned gold certificates- Brodie, Bridie and Corey.

Riley M became famous on the Hall of Fame.  He made it to 48th position with a score of 16, 366 points.

 

 

 

 

 

 

Can we do any better than this in the few weeks that we have left in 2012?

Angry Birds Angles

Last week, we learn about angles. ( Use the Maths is Fun website for extra practice for measuring angles)

We began by reviewing the principles of geometry. We learnt about:

1. point-no dimensions to measure

2. lines- have one dimesion (length) and can be diagonal, horizontal or vertical.

3. shapes- 2 dimensions- length and width and they can be regular or irregular

4. solids- 3 dimensions- length, width and depth. They can be prisms or pryramids.

We discussed types of lines and experimented by ruling lines and discovering the point of interesction. This point creates an angle and we can measure the angle using the unit-degrees. The angle measuring tool is a protractor. 

Our learning involved identifying acute, right, straight and obtuse angles. We also identified the reflex angle (outside angle).

We remembered that a right angle is 90° and that you can make a square inside of it. We discussed that an acute angle is just a cute little angle. It’s less than 90°. An obtuse angle is larger and is more than 90°.

Using the protractor to measure angles with degrees.

 

 

 

 

 

 

The important thing to remember when using a protractor is that the horizontal line goes through 0°. This is called the zero plane. We always put the center of that zero plane on the vertex, the point where the two lines meet. We then look up at the second line to see what numbers it intersects. If it is an acute angle, you will use the smaller numbers (less than 90°). If it is an obtuse angle, you will use the larger numbers (greater than 90°). 
We looked forward to Fun Friday because we related angles to the Angry Birds Game.

Angry Birds is a popular game where you have to use a slingshot to shoot birds through the air to destroy green pigs. Students had to design their background, figure out the placement of their pigs, decide what type of birds they would use and then figure out the path each bird would have to travel in order to defeat the level. After this was completed, we then found our zero plane (a line even with our slingshot). Students then had to fire off an angry bird at an acute, obtuse, right and stright angle. 

What do you think of our pictures?

Do you think Angry Birds is good for learning Maths concepts?

Do you have any suggestions for more Angry Birds Maths lessons?

Angry Birds Angles on PhotoPeach

Numeracy Week at LLPS

The task seemed easy!

Mr Robinson and Mr Wood set the task for the whole school. It was to recommend a height for the new playground’s overhead bars- the monkey bars, the flying fox and the roman rings.

We set about finding the range of height in our class.

We then collected the data for a standing vertical jump.

After much measuring and organising data we calculated the mean, median and mode for MLY.

We sent a letter to Mr Robinson and Mr Wood.

To whom it may concern,
Dear Mr Robinson and Members of the Maths Committee,
We, the  members of the wonderful class, MLY, would like to make the following recommendations to our school’s administration.
Our numeracy week project was to research the most appropriate height for monkey bars, roman rings and flying fox for Middles Playground Equipment.
MLY recently conducted an extensive study of student height and ability at standing vertical jumps.
The experimental group was 23 MLY students.
The data included heights of each student, the range, mode, median and mean of the heights.
We then collected and organised the data of a standing vertical jump of each student.
The class worked in pairs to carefully collate the data and, after hours of careful measuring, we have finally reached the answer for a perfect height for the playground equipment.
Our recommendation is that the monkey bars should be a standard height above the ground of 2m.
We believe that this height will suit most Middle Department Students.
We have presented our projects for your inspection.
 Thank you for your time, Mrs Lynch and students of MLY.

 We received an email back from Mr Wood:

Dear Mrs Lynch and MLY.

On behalf of the Lara lake Mathematics Committee I would like to thank you for your fine work when you investigated a suitable height for the monkey bars, roman rings and flying fox.
Your research shows that you understood clearly what was required. It was wonderful to see you apply your understanding of mathematics by finding the range, median and mode of the height of the students. These are important considerations for any designer of playground equipment.
I would have thought that possibly 2 metres above ground might have been too high, but your investigations of the standing vertical jump of the students proved that I would have been mistaken. I am pleased that you took this into consideration.
I would love to see any of the data that you produced.
 
Congratulations, again, on a wonderful investigation.
Bruce Wood.
Mathematics Committee Leader.
Lara Lake Primary School

Mean, Medium and Mode

Maths this week will involve us thinking about the maths in Olympic sports that have judges as the method of deciding who is the winner.
We will have five  judges on our panel and we will work out who can do the best dive in our class.
What do you think about the standard of diving from the experts?

The diving judges at The Olympics use a complex system of scoring but we will consider the scores by comparing the mean, medium and mode.
The song will help us learn the difference between each one.

Good luck with your dives everyone!

The Mean, Medium and Mode

Try it out with the deck of cards and then work out the mean, medium and mode of The Duggars Family from America- 19 kids.

Automatic Response to Number Facts

This term our OFI (Opportunity for Improvement) is in maths.

Our goal is to improve our automatic response in all number facts.

We have a few incentives in place.

1. THE STICKER CHART

Check your progress against your name. Each time you are tested for automatic response  you will receive a smiley face to indicate that you have mastered that fact family.

Remember the various number facts that you need to know from each particular fact family.

2×4=8

4×2=8

8 divided by 4=2

8 divided by 2=4

1/2 of 8=4

1/4 of 8=2

2. Mastery Cards from VistaPrint

Once you have your sticker you have earned a mastery card. Paste this into your diary and start a collection. Note the date. Be proud of yourself!.

Earn your mastery card by lots of practise!

 

 

 

 

 

3. Practise your number facts at home.

Mathletics times tables ‘toons’ are fun.
You will find them on your login page. Just click on the tab.

 

 

 

 

 

 

Here is another old favourite that you can play at home. You will have fun and improve your number facts at the same time.

MathsBlox Click on the link. Skip the ads.

You can compete against yourself…or others.

 

 

 

 

 

 

 

 

Leave a comment about your best way to learn your number facts. It will help others.

Learn Your Tables is another great interactive way to practise at home.

Practise daily.

Here is one for a bit of fun!

 

 

 

 

 

Fruit ShootA little bit of fun! is addictive!

Introducing Fractions

So much to learn about fractions

 

 

 

 

 

 

 

 

 

We’ve started our unit about FRACTIONS.

The activities are teaching us about the concepts that will help us to understand fractions right through school.

1. A fraction is an equal part of a whole thing. 

We folded different shapes into halves, thirds, quarters, eighths. It is tricky folding thirds but overlapping to make an ‘S’ helped us.

Fairy bread cut into halves, thirds, quarters and eighths proved that the more pieces we cut, the smaller the fraction becomes.

2. The top number is called the numerator and the bottom number is the denominator. 

 

 

We cut the fairy bread  in fraction parts and compared the size of the parts. The higher denominator means more equal parts. They are smaller parts. You can add and subtract the parts when the denominator is the same.

3. The Fraction Wall

Our fraction wall shows us how we can compare fractions. We can practise looking at different fractions and trying to see which ones are bigger and smaller when we compare.

 

 

 

 

4 Equal Fractions 

 Fractions can be represented differently but they are equal fractions. The tricky part is to make them into the most simple form of the fraction.
5. Fractions on the number line.
We did this by using a pipe cleaner in a circle shape to show 1/2, 1/4, 3/4.
We undid the circle and made a number line. It shows the parts of a whole on the line- between 0 and 1.

 

 

 

 

 

 

This week our work will investigate fractions of a group of things.

Drop by our blog next week to see how we went.
Here is Mr Duey….the coolest teacher in town. He has a rap about fractions that has over 1,000,000 hits.

Our Tom is Famous

We know that Tom is very clever at Maths.
He has made it onto Mathletics- Hall of Fame, many times.
We didn’t know that he uses all this maths for working out precision timing and angles to become an overnight sesnsation on You Tube.
How do you know how to get the ping pong ball to land when and where you want it to Tom?
We were all happy to see and hear you on all types of media last week.

Leave a comment for Tom to read.
Maybe Tom will tell us how to practise his ping pong tricks.