My sister's daughter is sis want her daughter to learn the numbers, shapes etc in a funny way...plz let me know how to do that...

Hey Abi she can introduce blocks now, my daughter learnt many on her own by recognizing from Cocomelon, Dave and Ava etc . Books are also good source, you can download Heycloudy app and see, they are fun.

YouTube is helpful in addition to it you can also look for stories to teach the child. I am using HeyCloudy App