Here you will find some webpages where you can practice everything you learn with your teacher in the classroom:

https://www.bradleys-english-school.com/online/flashmultiplechoice/mc_amisare.html

http://eslgamesworld.com/members/games/vocabulary/memoryaudio/fruits%20colours/index.html

http://eslgamesworld.com/members/games/vocabulary/memoryaudio/farm%20animals/index.html

http://eslgamesworld.com/members/games/vocabulary/memoryaudio/numbers%201%20to%2010/index.html

http://eslgamesworld.com/members/games/vocabulary/memoryaudio/numbers%2010%20to%2020/index.html

http://eslgamesworld.com/members/games/vocabulary/memoryaudio/number%20colors/index.html

http://eslgamesworld.com/members/games/vocabulary/memoryaudio/shapes%20and%20colours/index.html

http://eslgamesworld.com/members/games/vocabulary/memoryaudio/school%20items/index.html

https://agendaweb.org/exercises/grammar/articles-a-an

https://agendaweb.org/exercises/grammar/a-an-multiple

https://www.englishpage.com/articles/articles_1.htm

https://agendaweb.org/exercises/grammar/demonstratives/this-that-these-those

https://agendaweb.org/exercises/grammar/demonstratives/forms

http://cla-tice2.univ-fcomte.fr/eolf/wp-content/uploads/grammar/this_that_these_those/01.htm

https://agendaweb.org/exercises/grammar/demonstratives/write