These are a few of the quizzes I use the most frequently for my 3rd graders.
The ALT will need to host the quiz from their own Kahoot account, and the students will join via their tablets. Students don't need an account to play a Kahoot quiz.
The ALT should read the word aloud to the student, and the student should then click/touch the correct picture/word. I usually play by the special rule of students have to repeat the word first before they can answer, that way they are listening and speaking a bit too. (It also adds an element of urgency too)
If students have a hard time joining the quiz, check that they are typing the game pin using 半角 (half-width from the English keyboard) numbers and no space between numbers.
① Units 1 & 2: Greetings & feelings
② Unit 3: Numbers
③ Unit 4 & 5: colors, sports, foods, fruits mega quiz
④ Unit 7: colors & shapes
⑤ Unit 8 & 9: Animals