Nummòlt - construction toys - Mathematical engine mill.

Math Cats are welcome here. Link to Math Cats.

www.nummolt.com

Math manipulatives & construction toys

Visit our page: OBBL math toys & games
Adding apples and oranges (pears, lemons...), Egyptian fractions, How much pizza? ...

Math toys.

Math tools.

View and touch mathematics.

Primes as the basic building blocks of numbers.

Teacher resources about mathematics and physics.

Mill of numbers - Mathematical engine mill: - nummolt blog

Touch Integers ℤ (+ - × ÷) (Android)

Touch Integers ℤ (+ - × ÷)

Touch Integers ℤ (+ - × ÷)
Add, subtract multiply and divide integers in a visual and interactive way.

Is very easy add and substract graphically. One can regroup the tokens of each order, regroup, carry or borrow tokens, and you can obtain the result.
But not so easy to practice multiplication or division in this visual and interactive way.
I tried to think as a research physicist of the atom:
I looked the inside of the numbers:
Inside the numbers there are the components of the number: The prime factors.
To multiplicate two integers you must regroup the components of the two numbers.
To divide a integer, you must separate the components.
The program only works with integers. adds, subtract, multiplies and divides (but only exact division) using the prime factors of the numbers.
The behavior of places and tokens of this app describes the behavior of the numbers in the ℤ set.
Videos: Touch Integers ℤ (+ - × ÷)

Touch decimals Place value ± (Android)

Touch decimals Place value ±

Touch Decimals Online

Touch decimals Place value ±
Interactive double place value chart with positive and negative tokens.
Wireless abacus.
Designed to:
- Show and experience the addition and addition with carry.
- Show and experience the subtraction and subtraction with borrowing.
- Zero as "nothing" in a place value place, or as an undetermined number of negative-positive pairs of particles with sign.
The behavior of places and tokens of this app describes the behavior of the numbers in the decimal system.
Blog: Post: Touch decimals Place value ± Chapter 1: References:
Videos: Touch decimals (PlayList)
Touch decimals (promotional video v: 1.1.x)
Touch decimals: Borrowing (pre-release video)
Touch decimals: Carry (pre-release video)
Touch decimals: Transition (pre-release video)

Touch Math apps: (Android)

Touch Natural Numbers

Touch Natural Numbers:
Small laboratory of Natural Numbers:
The Prime numbers are like the building blocks of the numbers.
With this app you can:
Analyze the factors of a Composite number.
Build a Composite number from its factors. (multiplication and division of Natural Numbers)
Localize or select a number in the Ulam Spiral.
Verify all the possible products between Primes in a composite number with the Parabolic Sieve.
Analyze or build a number with the Place Value activity (Addition or Subtraction)
Understand the Modulo of a number.
Introducing the polygonal numbers.
Know the numbers as the sum of two prime numbers or as the sum of three prime numbers.
Touch Natural Numbers (video)

Touch Fraction

Touch Fraction:
Construction of the rational numbers.
Interactive fraction app.
Select equivalent fractions with the rational representation diagram.
The program is useful to understand:
fractions, coordinate geometry, rational numbers, cartesian plane, slope,
and the equivalent classes of pairs of integers.
video playlist

Touch Pythagoras

Touch Pythagoras:
Touch Pythagoras
Interactive Pythagoras Theorem app.
video playlist

OBBL Math Toys Android apps:

How much pizza

Adding apples and oranges

$old egyptian fractions$
Old egyptian fractions

Ninedigits workshop

Apples and oranges 1 decimal

$Reading fractions$
Reading fractions

Time Calculator

Whole Calculator

Calculadora Natural

$Adding unit fractions$
Adding unit fractions

$adding unit fractions +$
Adding unit fractions

Nummolt modulo applet.

Nummolt Modulo applet (May 2012: v2.02) (Work in progress).
Base ten blocks, addition, subtraction, Polygonal numbers, Modular arithmetics. [Java applet]
Video help files at: www.nummolt.com/modulo/help/index.html.

nummòlt.
From 7 years

Base 10 blocks manipulative: Integers are transformed into small blocks. That can be manipulated to solve elementary operations. Is useful to teach about numbers, place value, and elementary operations.
Matters: borrowing in subtraction, adding positive and negative numbers, multiplication by negative numbers....

160Kb. Win16 Windows9X nummolt.zip

Online Help:

Done in 1998 Release 3 Developing time: 1995/6/7 (C++)
Video Help: -- + -- * /? () -(x) +x-x +-?
Video Help: Playing: Quadrillion Signed parenthesis

obbl.
For everybody. (Elementary )

Construction toybox: Building blocks: Flat blocks. With gravitation. Beam blocks adhere among them. Thumbtacks are fixed blocks.

JavaScript (cellular automata)

Done in 2000 - 2001.

Activity: Adding integers: 1+2+....+n.

Collaboration:
with MathCats in obbl.

Playing with OBBL:

Little archaeologist...

Math
Water
Table.
(All ages).

Area workshop. Container blocks. To explain area and division.
It converts numbers in area units.
To measure area, filling figures. Didactic tool, and also a toy.
(Former Obbliq).

JavaScript + html5
(cellular automata)

August 2001-Feb 2005.
Feb 2013:
MWT Math Water Table v.1.0.0: MWT video help (youtube)

Old obbliq Help:
Obbliq and division #1: #2: Obbliq and Piaget's volume conservation
old obbliq video help Index:
Vol 3*2=2*3 3/0.5 PI

obblog 2.
From 15 years.

Logic construction toybox. Logic blocks. To explain binary logic, and learn about truth tables. It allows to keep the work. Binary logic simulator. Binary calculator

JavaScript + html5
(cellular automata)

Done in 2001 (Cellular automata.).
Updated: 2013
Help:
Obblog2 YouTube Playlist
Old Help:
Truth Tables videos: index
Binary counter
Binary countdown

Balance simulated: to weigh electrons, neutrons, atoms, virus, bacteria, ants, flies, eggs, thin cats, jumping cats, fat cats, donkeys, elephants, dinosaurs, houses, skyscrapers, pyramids, comets, moons, planets, stars and galaxies

MathCats Balance.
All ages.
MathCats Balance ANDROID.

Balance: To weigh a wide range of objects: from electrons to galaxies. Cats included. To play with division, fractions, multiplications, rational numbers, huge numbers and tiny numbers.

JavaScript

Done in 2003.
Help:
Balance Help
Collaboration:
Math Cats - Nummòlt

cinemice
Cinemice projector: V.01

Cinemice Projector: Format compatible with Cine Nic Projectors (Super Nic format). Toys and Cinema. Films posted with permission. (Museu del Cinema de Girona).

JavaScript/Java Navigator / Explorer

Done 2004-2012:
Museu del Cinema: www.museudelcinema.cat
Standalone cinemice
Offline version:
Cinemice main page
From Cinemice to reality:
From Cinemice to Cine-NIC

Cinemice Android
Boni's Cinemice site:
Boni's Cinemice

Cinemice apps: (Android)

Camera Patchwork

Camera Patchwork:
The application allows 360 degree views.
The program builds the image using a projection of the sphere similar to Mollweide.
The images are constructed from 300 small images.
The camera takes a picture when it detects a new spin 8 degrees in either direction.
Move the camera slowly.
We recommend vertical sweeps, moving to the right or the left.
Free app
Camera Patchwork Gallery: