4. Sınıf Matematik

https://youtu.be/BrFhYUPX7W8
https://www.youtube.com/watch?v=A84k5ZcIfBg&list=UUoWV0DS2JAYrM3wov5BvcvA
https://www.youtube.com/watch?v=hyCfVMHn0LQ
https://www.youtube.com/watch?v=xKpezCU8tbo&list=UUoWV0DS2JAYrM3wov5BvcvA&index=21