Nummòlt's elementary math games & tools:
obbl & math toys
Online Math toys, construction toys and logic toys:
OPEN ENDED TOOLS
Touch decimals Place value ± JavaScript version
Free Android Version (2.2 and up): Touch decimals Place value ±
Adding apples and oranges - Mental algebra, with a pre-algebra tool introducing the Gaussian elimination (2*2) (Web version)
(Android 2.2 and up - free version)
Adding apples and oranges on Samsung apps
There's also the full version of 'Apples and Oranges 1 Decimal' on Google Play: (1€)
How much pizza to order? - Adding fractions - Common denominator - With many kinds of Italian pizza
Free Android Version (2.2 and up): How much pizza to order?
Math Water Table - (former obbliq) Area workshop, liquid simulator.
MWT Ideas: (Youtube Playlist)
Adding apples oranges and pears - Mental algebra, with a pre-algebra tool introducing the Gaussian elimination (3*3)
Adding apples oranges pears and lemons - Mental algebra, with a pre-algebra tool introducing the Gaussian elimination (4*4)
Slow Fast Math Cats - Interactive Pre Algebra
Crossing the river with a wolf, a goat and a cabbage - Interactive logic
Time calculator: Time subtraction
Elementary encryption tool: Encrypt or decrypt your text
Dancing Numbers: Divisibility and modular arithmetic
Fahrenheit Celsius Kelvin converter
Spelling fractions
Fraction pie tool (web version)
Fraction pie tool (included in the Old Egyptian fractions for Android)
Old Egyptian Fractions (new tactile html5 web version: 2015)
Old Egyptian Fractions (Free Android version at Google Play)
Place value cakes
Ninedigits workshop
mathcats balance
mathcats obbl architecture blocks
obblog 2 (logic blocks)
obbl- architecture blocks
obblog 2 - logic blocks
obbliq- container blocks
ninedigits workshop & Math Cats balance & Mathcats OBBL (c) 2003 Wendy Petti of
MathCats
& Maurici Carbó of
nummòlt
obbl, obblog, obbliq, Apples & Oranges (web & Android), How Much Pizza, Touch decimals (c) 1999-2015 Maurici Carbó of
nummòlt
OBBL - Joguines matemàtiques en Català
OBBL - Juguetes matemàticos en Castellano