Changes

# To see the best videos on ratio and proportion [https://www.khanacademy.org/math/pre-algebra/rates-and-ratios/ratios_and_proportions/v/introduction-to-ratios-new-hd-version click here]

# To see the best videos on ratio and proportion [https://www.khanacademy.org/math/pre-algebra/rates-and-ratios/ratios_and_proportions/v/introduction-to-ratios-new-hd-version click here]

# To get the information about simple interest [https://www.mathsisfun.com/money/interest.html click here]

# To get the information about simple interest [https://www.mathsisfun.com/money/interest.html click here]

# This TESS- India link to a unit on [http://www.tess-india.edu.in/sites/default/files/imported/57317/EM15_AIE_Final.pdf Proportional reasoning] attempts to explore ways to teach proportional reasoning, including inverse and direct proportion in a playful and creative way. Students therefore come to school with some intuitive understanding and knowledge of proportional reasoning, but they also come with misunderstandings and different levels of understanding.

# This TESS- India link to a unit on [http://www.tess-india.edu.in/sites/default/files/imported/57317/EM15_AIE_Final.pdf Proportional reasoning] attempts to explore ways to teach proportional reasoning, including inverse and direct proportion in a creative way.

==Reference Books==

==Reference Books==