add all numbers between 1 and 20

We then tried Concrete->Pictorial->Abstract approach, where a pictorial representation is introduced before the mathematical equation (Abstract). Type your number below then click "Show me!" The result is the abstract representation of 10 + 2 = 12. Some will question the importance of this when the answer can be derived easily by counting. It also displays columnar addition of these numbers, the carrying (regrouping), partial sums etc. Note: There is an interesting article on, “From action to abstraction: Using the hands to learn math”, published online by Psychological Science. Many people spotted the pattern that all odd numbers (except 1) could be written as the sum of two consecutive numbers. Sing along with number bonds First choice: 20 possibilities. This selection will show how to compare two numbers using a number line. . For example. According to math legend, the mathematician Carl Friedrich Gauss, at the age of 8, came up with a method for quickly adding the consecutive numbers between 1 and 100. We can introduce derived facts based on making tens, i.e. 8 to be the correct answer. Counted on refers to counting from 8, Known fact refers to 7 + 7 = 14; Derived fact refers to 7 + 6 is one less than 7 + 7. Write a C# Console Application program to print numbers between 1 to 100 using for loop. Most people would consider between inclusive.
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