Well because it helps us with real life.
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"interesting maths" are "des math intéressants" in French.
Maths is a very interesting subject.
by using models, duh
You can also make your file interesting by including pictures which are related to vedic mathematics and which have humour.You can also include some interesting facts about vedic mathematics which can play a vital role in your project.Hope this helps.Best of luck!
your brain enjoys learning something new if your intrested in something you pay more attention in it and there fore find it intresting :)