"The child plays."
Translation:Das Kind spielt.
One way that helps me remember the ending of the word (spielt, schwimmt, etc) is - for a word relating to yourself (Ich), it ends in 'e' (for Me!). For a word relating to someone else (er/sie/es or ihr) it ends in ‘t’ (for Them!).
I have nothing cutesy to help remember the others (wir/sie) (du) – sorry!
And as a disclaimer, I am just a beginner, this may not be true every time, but so far it has helped. :)