Mathematics - Addition and Subtraction - Subtraction within 10 - What Flew Away?

Show 5 birds on a wire. Animate 2 flying away. Ask 'How many birds are left?' with 4 options. Do 6 rounds with different starting quantities (≤10) and different amounts leaving/disappearing (cookies eaten, balloons popping, fish swimming away). Each uses a fun animation. The goal is to connect subtr