Four Strikes: Double-Digit Addition Math Game

① This example is a math game called 'Four Strikes' that demonstrates practicing double-digit addition through a guessing game. ② The core mathematical concept is integer addition, specifically adding two-digit numbers, along with random digit arrangement and logical deduction. ③ Construction highlights: The game uses GeoGebra commands such as Shuffle to randomize digits, Textfield and InputBox1 for player input, and Vector and If to implement game logic. Objects include strikes, ng, guesses, g, gs, f, fs, e, es, d, ds, c, cs, b, bs, a, as, win, l1, sm, ec, fc, gc, button1, guess, InputBox1, and multiple text boxes (text1 to text5). ④ Suitable for upper elementary or middle school students, or for math education, to reinforce double-digit addition skills and serve as an interactive classroom activity.