Digit Matrix vs 识知

Digit Matrix is a collection of interesting mathematics exercises. This APP can improve the ability of calculation and logical reasoning, and cultivate mathematical thinking. It includes topics ranging from simple to very difficult. It is a good helper in learning mathematics or training the brain. Feature: Computing and Logical Reasoning Fifteen types. Infinite exercises Different Difficulties Easy to get started Five themes Contents: 1. Arithmetic Square Place the numbers from 1 to 9 into the cells (a different single number in each cell) so that the indicated equations are correct. Evaluate from left-to-right and top-to-bottom (ignore the usual precedence of the operators). 2. Chains Enter the numbers from 1 to X in the squares, once each, so that the given equations are correct. (Each equation begins at one square and ends at the next square; X is the total number of squares.) 3. SUMS Place a number from 1 to N into each cell. (N is the total number of cells in the grid.) Every cell must contain a different number. The numbers outside the grid, when given, indicate the sum of the numbers in the corresponding row, column, or diagonal. 4. Coins Place one coin into each cell such that the sum of the coins in each row and column matches the number to the left and the top. the same denomination may be used multiple times in each row or column. 5. Hundred A square grid whose cells are to be filled by some digits. The task is to fill additional digits in required cells such that the sum of numbers in each row and each column equals to 100. 6. Antimagic Square Place numbers from 1 to 2*N (N is the number of cells per side) into the cells so that there are exactly two numbers in each row, column and main diagonal. The sums of the two numbers are shown around the grid. 7. Products Place numbers from 1 to 2*N (N is the number of cells per side) into some cells so that each number is in exactly one cell, and no cell has more than one number. Each row and each column must contain exactly two numbers. Numbers outside the grid are the product of the two numbers in that row or column. 8. Products (Off-by-One) Place numbers from 1 to 2*N (N is the number of cells per side) into some cells so that each number is in exactly one cell, and no cell has more than one number. Each row and each column must contain exactly two numbers. Numbers outside the grid are 1 more or 1 less than the product of the two numbers in that row or column. 9. Addends Select Specified quantity of numbers from a given number set. Each number can not selected more than once. The sum of selected numbers must same as the given value. 10. Equality Delete Specified quantity of squares so that what remains is a correct equation. Use standard order of precedence (multiplication and division before addition and subtraction). 11. Alphametic Square Each letter represents a different digit. Figure out which letter corresponds to which digit so that all equations are true. Multi-digit numbers cannot start with the digit 0. 12. Matches Arithmetic Remove, Add or Move one to three matches so that the matches express a correct arithmetic equality. Click the match to remove it. Click the empty position to add the match. 13. Digit Twins Two numbers are connected by up to three line segments, and the two numbers are divided by their greatest common divisor at the same time. If the quotient is 1, the number will be eliminated. All numbers on the board need to be eliminated. 14. Divisor and multiple Numbers are added to 2 queues alternately. 2 groups of numbers are divided by their greatest common divisor in turn. Eliminate the number If the quotient is 1. 15. Numeric Factor Path On the board, if any two adjacent numbers have a common divisor greater than 1, they can be connected, and only one line can be connected between the two adjacent numbers. The final goal is to connect all the numbers into a non-intersecting path.

这款应用是我儿子3岁时，他奶奶教他认字时产生的需求，当时他奶奶做了很多纸卡片，他就一张一张的认，一张一张的识，但是随着识字的数量越来越多，不得不做更多卡片，这个时候我突然想做一个软件来解决这个认字的需求，这样装在手机里，随时随地的可以学习和复习。于是就有了这款软件。一开始做出来字比较小。他奶奶看不清，于是我就做了点击放大的需求。同时照顾到了老人和孩子。现在我儿子识字的数量远远大于这些基础字了，识字对他的表达和阅读都有非常大的帮助。所以我也希望这款应用能帮助您和您的孩子共度美好学习时光。 识数字可以培养孩子认识0~100的增长过程，以及负数和100以后的数的概念。 识英文方便孩子认识26个英文字母的大写和小写。 识拼音是我从儿子课本里面搬过来的，欢迎大家指出意见。 这大概是幼儿园小班~大班必学的蒙数概念，老师会叫你的宝贝经常复习把10拆分成1+9、2+8...9+1这样的数字。我儿子之前对这个概念一直很模糊，于是我做了这款应用，他使用过后，清晰的了解了数字拆分的概念。数的拆分是蒙数中基础中的基础。希望这款应用能帮到孩子们理解数的拆分的概念。 乘法口诀，我儿子目前还在幼儿园大班，还没有学到，我先做出来希望给他一点数学的启蒙。如果有好的建议，欢迎指导。 24点是我小时候玩的纸牌游戏，一副扑克，随机洗牌，去掉双王，每次翻4张，JQK分别为11,12,13，每张牌必须用且只能用一次，通过加减乘除的运算，得到24这个结果就算赢。如抽出的牌是3、8、8、9，那么算式为(9-8)×8×3=24。本游戏支持分数运算，但不是每组牌都有解，如果算不出来，可以点击新局，可重新随机4个数字。 2的次方是计算机基础的基础，希望将来掌握编程技能的孩子，越早熟悉越好。 本应用旨在帮助家长更好的陪伴孩子学习知识，启蒙兴趣，希望大家使用本应用时，是家长与孩子共同参与。希望本应用在陪伴您和孩子时，能给大家带来助力与快乐！