Posts Tagged ‘Amazing Middle School Math Challenge’

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Pi on TV

March 8, 2017

1.  The Simpsons

When Marge is accused of stealing from Apu’s Quickie Mart his memory is tested. He says his memory is very good. He can recite pi to 40,000 places!!! Also on Numberphile: A Mile of Pi.

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2.  The Late Show with David Letterman

Maths savant Daniel Tammet explains that he can recite Pi to 22,000 places. But wait until you hear how long it takes. Amaaaazing!!!!!

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3.  Star Trek

Spock sorts out a computer with the command to calculate Pi. Cool!!!!

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4.  Mathletics

Look for the second maths blooper in this clip. The folks at Mathletics get Pi wrong!!!!! Great spotting Mathologer.

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5.  MTV Kate Bush

Some may prefer to listen to Apu reciting Pi to 40,000 decimal places. Nevertheless, here is Kate Bush singing about Pi.

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2. Folded Paper Cube

February 15, 2016

10 Amazing ways to see a cube

You can find a number of ways to fold an origami cube on the web. Jeremey Shafer will show you how to fold a seamless cube (below) here.

It’s a bit tricky. Wikihow has very clear instructions on how to fold a simple paper cube here. 

Screen shot 2016-02-15 at 3.39.33 PM

But, Mathspig prefers the paper cube designed by Phillip Stromberg of the Netherlands.His cube calendar (below) comes inside one of these paper cubes. This was a very spooky calendar as Mathspig could see her life disappearing in front of her eyes for one whole year. ARrrrgh!

Stromberg Cube Calendar

Here is the way to fold a Phillip Stromberg cube:

Mathspig Cube 2.1

Step 1: Draw up a grid on cardboard 7 x 6 square.

Mathspig used 8 cm squares on paper. Cardboard would make a stronger cube.

Mathspig Cube 2.2

Step 2: Count of squares and draw this pattern.

Mathspig Cube 2.3

Step 3: Cut out the cube template.

Mathspig Cube 2.4

Step 4: Use scissors to score all folding edges.

Mathspig Cube 2.5

Step 5: Score the perpendicular bisectors of the isoceles triangles. Ha Ha! I’ve always wanted to say that!!!!

Mathspig Cube 2.6

Step 6: Fold the cube sides up, tucking the extended flaps over the triangles.

Mathspig Cube 2.7

Step 6: Fold down the cube lid!!!

OK! It may take some practice. But mathspig likes her cube.

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3. Anamorphic Cube

February 11, 2016

10 Amazing ways to see a cube

This is quite a challenge. The idea is to draw an anamorphic cube so that the image, once projected onto a curved surface looks like a cube. You will find the template or graph for this exercise on Mathspig here.

It took me several goes to get it … sort of … right.

Mathspig Cube 3.1

Step 1: Make silver foil/cardboard cylinder to fit the dotted circle on the grid below.

Mathspig Cube 3.2

Step 2: Draw in the corners of the cube on the square grid and match these corners on the curved grid.

Mathspig Cube 3.3

Step 3: Draw in the three vertical sides of the cube and match these lines on the curved grid.

Mathspig Cube 3.4

Step 4: Draw in the top and bottom horizontal sides of the cube on the square grid and match these on the curved grid.

Getting tricky now.

Mathspig Cube 3.5

Step 5: Draw in the blue, orange and green sides of the cube on the square grid and match these on the curved grid.

Mathspig Cube 3.6

Step 6: Place silver cylinder on dotted circle.

Mathspig Cube 3.7

Step 7: Can you see the cube?

Mathspig Cube 3.8

Step 8: Here’s a closer look.

An even better Anamorphic Cube.

Anamorphic Illusion Art of a Rubik’s Cube

By John Snow

Amazing Anamorphic Illusions by Brusspup

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m+ms maths 7: how many m+ms will kill my pet mouse?

June 17, 2015

Maths topics 10

mathspig m&m maths 10

Theobromine is the poison found in chocolate. The LD50 is the Lethal Dose for 50% of animals to die. The LD50 information for mice can be found at The Toxicology Data Network

You can find more Death by Chocolate Maths here and here.

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2 Diamonds Are for Maths Class

April 9, 2013

Maths-is-Awesome Activity

Diamonds are for Maths Class

Skill: Geometry, scale, ratio, measurement

Level: Junior, Middle School

Here are some amaaaazing  cardboard creations by bartek elsner.

103.1 Cardboard-creations-by-Bartek-Elsner-7

103.2 Cardboard-creations-by-Bartek-Elsner-19103.4 Cardboard-creations-by-Bartek-Elsner-5

But the creation that is so beautifully geometric is this crow.

103.3 Cardboard-creations-by-Bartek-Elsner-10

Start here ……………

paper-diamond-8Before we get to crow level we better start with something more symmetrical.  Here are some cardboard diamonds. You will find the template for the cardboard diamond below at Minieco.

paper-diamond-how-to