This video will give you classroom  experience with high contrast colour of the blackboard. The colour of the blackboard is very cool and it is very much eye-friendly.
 This is made for class 4 on factors and multiples. This video contains the basic of factors and multiples. It is very lucid to understand. If any students of class 4 watch this video then he will never forget about factors and multiples. 
Give your feedback for any improvement of this video. Also ask your question if you have any hesitation. 

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