Maths · Functions
10 shots · Calculate the zone and save
10 questions
3 easy, 3 medium and 4 hard. No time limit.
Calculate f(x₀)
Substitute x₀ (goal position) in the function and determine the zone.
Feedback after each shot
You'll see the correct calculation and the ball's real zone.
Final score
How many saves out of 10.
Each question is a function and a goal split into zones. You calculate f(x₀), the value of the function where the goal is, and decide which zone the ball is heading for so you can save it. It is evaluating a function, but with a consequence you can see.
Lines, parabolas and other secondary and sixth-form functions come up. There are ten questions with no timer, to do calmly and on paper if needed.
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