How could I chaining many objects

Hi, I have made my app 2 weeks ago, about education. My language isn't English So I'm sorry to my English.

I want make a flow in my application. For example, there are many objects in my app. called A, B, C, D....In main screen, A is active and others are not active. When I click A, A is gone with fade-out effect and B comes up with fade-in effect. Then B is clicked, B is gone and C is on the screen.....I wonder this function But I can't find solution and example source codes...Please help me as quickly as possible.