Concept of Percentage for Class 7 (Mathematics)

sharing a nice and beautifully explained video on PerimeterPerimeter

Probability - 4 sets of quizzes on coins ,dice ,cards and miscellaneous  questions
1.on coins
2.on on dice
3. on cards
4.mixed bag

Volume and surface area (Classes VII-X)
Sharing collection of videos and quizzes on volume and surface area.Hope it will help to clear the concept of the topic.