One popular way of introducing the negative numbers is through the number line. Most textbooks start with the whole number on the number line and then show to the students
Top 10 errors in algebra
Mathematics is indeed a universal language. Even errors are universal. Here are the top ten errors in algebra which are beyond borders and colors. #10. Squaring the negative. A minus a
History of Numbers
Like all other forms of languages, mathematics developed because of the necessity to communicate ideas. In the case of numbers, it was to express and record ‘countables’. Below is a
Doing problem solving
I like these graphs which show how a mathematician and a typical student solve a problem. The first two graphs were from the post “Some research discoveries”. The last one is mine,