Posts Tagged ‘Fun Year 9 maths’

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Trick 8: Spooky Maths Magic

November 30, 2012

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Spooky Maths Magic

Requirements; Smart board/data projector.

 This is mental maths, but not hard maths. You can play this video by Marco Frezza  directly to the class.

It may not work on everybody, but it would be very interesting to see how many students are fooled by this spooky magic man.

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3.The Great Maths Race

August 15, 2012

Challenge 3:

The Great Maths Scavenger Hunt

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Students must complete 2 challenges @ 2 ½ points each: Minimum of 2 challenges, Maximum of 4 challenges.

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3.The Great Maths Race

* Make a protractor Anemometer and calculate the current wind speed. Conversion Chart here.

* Bring a sextant

*  The Brix number is used to measure sweetness. One degree Brix is 1 gram of sucrose in 100 grams of solution. What would the Brix number be for orange juice, Gatorade and coke? You will need to know the sugar content in gm for each drink ( Look here) and the volume of a coke can or bottle.

* Make a poster using maths symbols going off at a tangent.

*  Your growth chart for 10-year period.

* Width of the front of the school block in toilet paper sheets. You will find some handy measurements here.

* Bake a π pie

 

 

* Cook a Fibonacci cake

* Bring in a mock up poster (in waste paper) of all paper sizes from A8 to A0.

* How much do we spend per person each year on toilet paper? You will find information @ toilet paper fun facts. Yes! There is a Toilet Paper Fun Facts website.  We use an average of 57 sheets each per year and, say, a toilet roll has 350 sheets. You will have to price the toilet rolls.

* Prove 1 + 1 = 2 in the most complicated way you can.

* Demonstrate Pythagoras Theorem using Saltine crackers.

* Develop a maths clap chant. Team must teach clap chant to class.

* Make potato stamps of the surds: √2, √3 and √5 and stamp an equation.

* Use bubble gum to demonstrate the parabola to the class of y = x2

* Make an Origami Pentagon from a square

* Make a (with clothes on) photo of yourself as Leonardo da Vinci’s Vitruvian Man.

* Make Pascal’s Triangle using jellybeans or rice grains

* If your hair kept growing at the average rate of 0.04 cm per day, how long would it take to reach the same length/height as you? Show calculations.

* Make a poster of Bernoulli’s Triangle 20 lines long.

* The fastest remote controlled car on earth, so they say, is the Traxxas XO-1, which goes from 0-62mph ( 0 – 99 kph) in just 2.3 seconds and can hit 100mph (160 kph) in less than five seconds. How long would it take for the remote controlled car to travel to your nearest Macdonald’s and return with fries at 62 mph and 100mph? Print out a map.

*  Research the height and weight of 10 famous ballerinas and plot these statistics on a height Vs weight chart. Is there a mathematical pattern?

* If a kangaroo can hop at 25 kph (15.5 mph), how long would it take to hop across the middle of Australia E to W?

 

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4. The X Squared Factor

August 15, 2012

Challenge 4:

The Great Maths Scavenger Hunt

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Students must complete 2 challenges @ 4points each. No additional challenges allowed.

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4. The X Squared Factor

* Make an origami soccer ball

* Video of a pile of Lego sorting into a Venn Diag of shape, colour and bumps

*  Fill a matchbox full of rice. How many grains? How many grains of rice to fill an Olympic swimming pool?

*  Learn π to 20 places then annoy everyone. No. Just demonstrate this skill.

* Devise a way to simply measure the volume of a set of keys. (Go Archimedes Go)

*  Toast the area of a piece of toast into the toast.

* Draw a simple picture of mathematician on graph paper. Write the co-ordinates of major points [eg. (2,5), (5, 7) etc] in order so that someone else can redraw the picture without seeing it. Test it.

*  How many corn flakes are there in a 750gm box?

* Trap yourself inside a Matrix. Full points for most creative effort.

*  Give a 3-minute humorous talk on why fractions are vulgar.

* Devise a method to calculate the speed of ants around your house or the school. Now calculate the time it would take for an ant to finish the 100m Olympic sprint.

* Demonstrate n! from n = 1 to n = 10 in Lego blocks

* Bring in an Abacus and demonstrate how you multiply 96 x 72.

* Find the minimum aeroplane seat width @ Seatguru for British Air, Qantas and American airlines. Now calculate how many seats these airlines could fit across your couch @ home.

*Rewrite the 12 Days of Christmas Carol with maths terms. Sing in woollie hat and scarf to class.

* Sing the 7 times table to the class Opera Style.

* There are 1,070 dimples on a golf ball. The diameter of a golf ball is 4.3 cm. How many dimples per square cm? The diameter of a tennis ball is 6.9 cm, how many dimples would fit on a tennis ball?

* How many slices of bread to cover your country? How many loaves? You will find size and links here.  A pre-sliced loaf of supermarket bread is approx 10 cm by 11 cm.

* A large tube of toothpaste is 4.2 oz or 119 gm. What length of toothpaste squeezed in a straight line could you squeeze out of that tube?

* How much air is in an Aero? This can be calculated. By weight and by volume.

* How many 100s & 1000s or sprinkles or jimmies are there on average on top of a cup cake? Make an equation (That’s algebra, folks) using symbols made of sprinkles on cupcakes. Bring to class. They will be eaten.

* Rewrite Some of My Favourite Things from the sound of music using only maths terms. You can make clothes out of curtains or use old clothes and felt markers and whatever grabs your imagination to make a maths tie/skirt/shirt/hat to sing the song to the class.

* What is the probability that a peanut butter sandwich will land peanut butter if you get a fright and throw it in the air? Show trial numbers.

* How many channels can you surf in a 20 second period? If you had to get up off the couch, walk to the TV set, push a button and return to the couch, how long would it take to surf that many channels? Yeah! Like in the olden days.

* Make a complex tessellation using Cuisenaire rods or potato stamps you have carved. (Diagram below is not a tessellation but nice potato stamp art.)

Here are the The Great Maths Scavenger Hunt PDF files: The Great Maths Scavenger Hunt

Here are the answer guidelines: The Great Maths Scavenger Hunt Answers

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I’m Forever Blowing … Cubic Bubbles

July 6, 2012

Here are some Cubic Bubbles:

Mackenzie Bubble Mathspig

Mackenzie has made a Square Bubble.

Angus Bubble Mathspig

Angus has made a Cubic Bubble. Thanks Guys!!!

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Where did Mathspig learn about Cubic Bubbles?

At the the 13e Salon Culture & Jeux  Mathematique, Paris.

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This Phd student was demonstrating how to make CUBIC BUBBLES. Everyone was intrigued.

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Finally, I tracked down the supplier of the mathematical construction kit used above.

It’s called Zometool. It is absolutely brilliant.

The manufacturers describe the kit as Art and Science at play.

What you can build with this construction kit is mind-boggling. Here are Zometool Experts Erwin and Lyn.

They built this sphere in several hours the day before the expo.

You can find these German product kits on Erwin’s website @ Zometool

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Here is a video showing the Zometool and how to make a cubic bubble.

The Zometool is a little pricey although well worth the investment for a school.

But if  you want to make a cubic bubble you can construct your own cube using straws and pipe cleaners or just pipecleaners.

Mathspig and Ivy, 10, my maths consultant from next door made pipecleaner cubes (Below)and cubic bubbles

( Hint: You have to jiggle a bubble into the center of the cube). We had great fun.

We made the best cubic bubbles from the straw cube (below)


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So go on, mathspiggies, have some fun. Make some cubic bubbles.

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10 Reasons Why Maths Teachers Rock!!!!

January 4, 2011

Science Teachers can be a little creepy.

Music Teachers can get carried away.

The new foreign language teacher can be too friendly.

PE teachers expect you to enthusiastically embrace the challenge of  freezing your ass off outdoors.

Domestic Science teachers teach too many useless things like how to boil an egg or shrink a child.

Librarians get really upset when you don’t return books.

Art teachers can go too post-modern.

English teachers nag you to read books that are, get this, already out on DVD.

Drama teachers can get too carried away with the performance concept.

Some teachers really do know how to make you do your homework!

But maths teachers …

Oh YEAH Maths Teachers

we are cool, babe!

… like totally co^2l!

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Don’t Get Your Knickers in a Knot do the Maths, Babe!!!!!

July 26, 2009

 

undies article Correctionholdworld_tns  

  MATHS IN THE REAL WORLD!!!!!!

   A part of Mathspig’s mission is to show students how maths is used in the Real World, which means everywhere. 

 

  Gather round fashionistas, catwalk strutters, A-listers, party people and cool dudes…. the usual suspects. If you want work in the fashion industry you should be able to read the graph ( below). This was published in the business pages of The Age (27/7/09).

homer       

What does it mean???? 

  Have a look?? Can you guess?     

undiest  This graph represents the price of men’s undies vs women’s undies. This data is based on the Consumer Price Index.  Economists collect prices of , maybe, 200 undies, pjs and socks  across Australia and calculate the average price every three months.

 The price of men’s underwear, nightwear and socks fell 3.8% last 3 months to June 30. Whereas the price of women’s undies, nightwear and hosiery rose by 9.7%.  If you look at the graph you will see in March 1981 men and women were paying the same for undies. This is just the cost. Women probably spend more on undies because they buy more. Today woman are paying 0 .3 or 30% more for their undies, hosiery and pjs than men.

If you own a shop or fashion business you must know what’s going on. Stock up on women’s undies now!!!!! In a recession women tend to spend more on underwear than expensive dresses. Whereas men tend to keep their old undies going for a few more months…. years possibly!!!!!!  Men aren’t buying undies so the price drops. BOXERS. UNDERDAKS. SALE. SALE. SALE. Women are buying more undies so the price goes up. This is not guess work. You can see the trend in the graph.

undies graph CorrectionDon’t get your knickers in a knot… do the maths?