The teacher asks pupils to open a mathematics website and view a slideshow on subtraction. The teacher then explains the concept of borrowing in subtraction and has pupils practice sample subtraction problems by creating a table to show their work. The teacher discusses answers with the class, letting some pupils present at the front, or checks answers on the website. Pupils then explore additional subtraction exercises on the site.

1. Teacher’s Guide Teacher ask pupils to open the website “ADozenOfMathematics” in WIkispaces. Teacher ask pupils to view the slide show on subtraction. Teacher explains the instruction to pupils after they have viewed the slide show. Then, teacher ask pupils to try out the task in a piece of paper on the concept of borrowing for subtraction. Pupils are required to answer the question by creating a table and show the calculation in the same piece of paper for each question. Teachers can discuss the answers with pupils, once they have completed the whole task by randomly choosing few pupils to present their answers in front of the class or click on “Answers for Subtraction” in the website and check the answers there. Then, teacher can let pupils to explore and try out more questions on subtraction by clicking on “Exercises” in the website that will link to other websites.