Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

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**MathsIsFun**- Replies: 5

Made an Android App:

Would really value hearing your experience with it so I can improve it.

Thanks guys.

Probably best I just don't mention time. Save it for another time

**MathsIsFun**- Replies: 5

I am working on a short video about Dimensions.

This is my script. Is it accurate? Does it convey the ideas well?

script wrote:

Hi! Let's learn about Dimensions

In Geometry we can have different dimensions.

Let us start with a point.

Can't see it? Well it has no size, so we will highlight it.

Now lets allow the point to move in one direction.

We get a line.

We need just one value to find a point on that line. So we have one dimension.

A line is one-dimensional.

Now lets allow the point to move in another direction. And we get a plane.

We need two values to find a point on that plane. So we have two dimensions. We call it 2D.

A 2D object is flat.

Circles, triangles, squares and more are two-dimensional.

We also call them plane shapes.

Now we let that point move in another completely different direction and we have three dimensions.

Spheres, cubes, cylinders and more are 3-dimensional.

We also call them solid shapes.

We can have more dimensions, but I can't draw them.

In Physics Time can be thought of as a dimension, but not in Geometry.

Welcome to the forum, Timothy!

Chris2 wrote:

Nice to know how you look like (well, not in a creepy way).

I wish I looked and sounded that good! That is Joe, he does voices.

Happy Christmas all!

**MathsIsFun**- Replies: 8

Made a video for Cardinal, Ordinal and Nominal Numbers

Comments and suggestions please!

**MathsIsFun**- Replies: 2

November 23rd => 1,1,2,3

(But the sequence actually starts at 0)

Leonardo Pisano Bogollo, as well as being famous for the Fibonacci Sequence, helped spread Hindu-Arabic Numerals through Europe in place of Roman Numerals.

Excellent review, thank you!

**MathsIsFun**- Replies: 3

A fun and useful page: Estimate Distance

What do you all think?

**MathsIsFun**- Replies: 3

A page to help clear up any confusions people may have about Scalars Vectors and Matrices.

Corrections, suggestions please!

I decided to add a section on the worn logarithm book, and found that Simon Newcomb actually discovered that!

See my revised version (use refresh): First Digits Rule

Thanks Guys!

**MathsIsFun**- Replies: 8

A new page, on "Benford's Law": First Digits Rule

What do you think?

Thanks!

Great, will add : and define a Universal Set for the Complement example.

Has anyone else seen I used for irrationals?

Good point, will amend.

**MathsIsFun**- Replies: 11

A new page: Set Symbols

What do you guys think of it? Any mistakes?

Fine, thanks. Blue. Yes.

And you?

Thanks Ganesh, Bob, Bobby!

chooipian wrote:

Standard Form and Scientific Notation?

Thanks, will add.

bobbym wrote:

...what do they use for the other two? Boiled Or Denatured Makes Alcohol Sweeter? ...

Funny! But a good point, it would be nice to have one for BODMAS and BEDMAS.

**MathsIsFun**- Replies: 7

A new page: Math vs Maths ... and more

Good page? Any mistakes? Do you have your own thoughts on this?

And any more examples for the second half would be appreciated.

Hi Bob,

Thanks for that, I will look into how I might be able to repeat the tabs in this version.

I think imgur (or the like) is the best solution for image hosting at the moment.