21 листопада

 https://www.matific.com/ua/uk/home/maths/episode/hop-on-the-bus-use-counting-to-add-and-subtract-whole-numbers/?grade=grade-2

https://www.matific.com/ua/uk/home/maths/episode/raise-the-bar-complete-arithmetic-sequences/

https://childdevelop.com.ua/html/temp/files/c/cd5ba171fb5bd0b96862aa788b4396e0.pdf