Description

With this application you can really learnandunderstand the subtraction operation.
With this application you can learn how to subtract two numberswiththe help of pictures.
This application turn subtraction from abstract tovisual,tangibleand concrete.
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At the bottom of the screen you can see thesubtractionexercise.
(Eg: 72-35)

Above exercise you can see the answers. (One of which mustbeselected).
Above the answers you can see the left number fromtheexercise.
(Eg: 72)

At the moment you click on the aid button you can seethenumbers
turning into pictures.
A picture of a single match represent one unit. (Located ontheright).
A picture of a single package of matches represent tenunits.(Located on the left).

(Eg: 7 matchboxes, 2 single match )

click 2 on the Help button.
Pack of matches will be marked with Xs and turn to 10 unitsofindividual matches.

(Eg: 6 matchboxes,1 marked matchboxes, 10 single match , 2singlematch )

click 3 on the Help button.
Pack of matches that was marked with Xs disappeared.
The number of Matches and match packages which should be reducednowmarked with Xs .
(Eg: 3 matchboxes,3 marked matchboxes, 5 marked single matches ,7single matches )

click 4 on the Help button.
Delete the matches and matches packets marked with Xs.
(Eg: 3 matchboxes, 7 single match )

Now you can see the answer to the subtraction exercise .
(Eg: 3 matchboxes, 7 single match )
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Number 1 app .
Learn Subtraction Skill by pictures.

perlin kadar original