Guess the angle shown, in degrees, in four tries or fewer. Higher or lower hints help you zero in.
π Estimation
Guess the numbers behind five real-world facts each day. The closer your estimate, the higher you score.
π Estimation
Three daily estimation trivia questions. You're scored on how close you get, so a good guess beats a lucky one.
π Estimation
Three daily estimation questions from different categories. You won't know the exact answer, so reason your way to a sensible number.
π Estimation
Slice each 3D object into two pieces of exactly equal weight. Five objects a day, and it's harder than it looks.
π Estimation
One question, one guess. Your score is based on how many orders of magnitude you are from the right answer.
π Estimation
Decide which of two things has more, and keep going until you get one wrong. A classic higher-or-lower game with daily categories.
π Estimation
Scale an object to its real size relative to a reference object. Five rounds a day to test your sense of scale.
π Estimation