ID: com.nummolt.math.value.place
Version: 1.1.5
Size: 1 Mb
Touch decimals Place value ± Screen Preview
How to setup Touch decimals Place value ± apk for android
- For Android 4.0 or higher:Please to Settings, look down to Security, and select Unknown sources. Choosing this choice will enable to install apps download from the internet.
- For devices running on lower Android 4.0:
Please go to Settings - open the Applications option, and select Unknown sources, click OK on the popup alert.
Touch decimals Place value ± Details
Double interactive place value chart.Wireless abacus.
Visual and graphic calculator:
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 negative-positive pairs of Tokens.
Two configurations: Default and J. LeMieux:
Change: upper back arrow, or at the menu option.
Youtube Playlist:
https://www.youtube.com/watch?v=Ni5S34rrEhQ&list=PLo4AMY8jDHYYmmMPglVUmJG6uhwJmGIPS
D E F A U L T . . . C O N F I G U R A T I O N :
(Positive and negative Tokens, and Places without sign)
MAIN ELEMENTS:
Each chart with a variable number of places.
In the places, a variable number of tokens with positive or negative value
TOKENS:
Can be positive or negative:
A positive token is born with the tap of a finger on the screen
A pair of positive-negative tokens is born with a tap of two fingers on the screen
A token disappears if it crosses the top or bottom border.
Behavior:
Positive and negative tokens have the same behavior:
A token can cross at will the intermediate horizontal border
When a token crosses the border on the right, it becomes 10 tokens.
A token need 9 companions from the old place to cross the border to the left.
Positive and negative tokens may be in the same place.
But if two tokens of different signs meet, they cancel each other.
PLACES:
A place can contain tokens of the same or different sign.
The upper and the lower borders can be the external border or the intermediate border.
Tokens can cross freely the intermediate border.
If a token cross the external border, disappears.
To get the permission to cross left borders, a token needs 9 companions of the same sign.
A token recovers 9 companions if cross the right borders.
GENERAL:
There are two charts: The upper and the lower one.
There is a button in each chart to change the sign of all its tokens.
L E . M I E U X . . . . . C O N F I G U R A T I O N :
(colored Tokens without sign, and Places with sign)
MAIN ELEMENTS:
All the Places of each chart can be positive or negative.
TOKENS:
A pair of tokens is born with a tap of two fingers on the screen over two places of different sign.
The behavior of tokens:
A token can cross at will the intermediate horizontal border if the places have the same sign.
When a Token tries to cross the border to a Place of a different sign, calls another Token of the other Place, and they cancel each other in the border.
PLACES:
A place can contain not signed colored tokens.
Tokens can cross freely the intermediate border if the sign of the two places are the same.
GENERAL:
There is a button in each chart to change the sign of all its Places.
Control:
In the 'settings' options: erase all tokens of each chart, or to erase all tokens and refresh all.
Touch decimals Place value ±
The behavior of places and tokens of this app describes the behavior of the numbers in the decimal system.
Courses:
Math 1, 2, 3, 4 Number sense: Place value.
Math 5, 6, 7 Base Ten:
COMMON CORE
Grade 1:
Understand place value:
CCSS.MATH.CONTENT.1.NBT.B.2
Use place value understanding and properties of operations to add and subtract: CCSS.MATH.CONTENT.1.NBT.C.4; CCSS.MATH.CONTENT.1.NBT.C.5; CCSS.MATH.CONTENT.1.NBT.C.6
Grade 2:
Place value:
CCSS.MATH.CONTENT.2.NBT.A.1
Place value understanding and properties of operations to add and subtract:
CCSS.MATH.CONTENT.2.NBT.B.5; CCSS.MATH.CONTENT.2.NBT.B.6; CCSS.MATH.CONTENT.2.NBT.B.7; CCSS.MATH.CONTENT.2.NBT.B.9
Grade 3:
Use place value understanding and properties of operations to perform multi-digit arithmetic.
CCSS.MATH.CONTENT.3.NBT.A.2; CCSS.MATH.CONTENT.3.NBT.A.3
Grade 4:
CCSS.MATH.CONTENT.4.NBT.B.4;
Online version: http://www.nummolt.com/touchdecimals/index.html
Developed by: http://www.nummolt.com
Nummolt apps: "Not Montessori per se, but Montessori-like"
Blog:
http://nummolt.blogspot.com/2015/07/touch-decimals-chapter-i-introduction.html
What's new in Touch decimals Place value ± 1.1.5
v.1.1.5 r.9 Added nummolt self-reference in standard activityv.1.1.4 r.8 Fixed a bug in the central number of negative tokens
v.1.1.3 r.7 Added swipe out in Places
v.1.1.2 r.6 Marshmallow - New central number in tokens.
v.1.1.1 r.5 Fixed a bug in the vertical drag of tokens between places of the same sign in the LeMieux option
v.1.1.0 r.4 nummolt - LeMieux collaboration result
v1.0.1 r.2 Fixed little bugs. Found a little new bug
v1.0.0 r.1 First version (some problems of youthfulness).
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