Math 7

 Himpunan

1. Penggertian himpunan

https://www.youtube.com/watch?v=PbjTeOoi26c

2. Himpunan semesta

https://www.youtube.com/watch?v=ghCGbuBT-D0

3. Diagram venn

https://www.youtube.com/watch?v=nZW1-pCw7xU

4. Operasi Himpunan

https://www.youtube.com/watch?v=gKtBbb68OiU