LEARNING GAMES · FREE & AD-FREE
Marble Jar Estimator
Marble Jar EstimatorA WiggyGames OriginalPlay Marble Jar Estimator online
Rotate a jar of marbles, estimate the count and see how close you came. Free and ad-free in your browser.
How to play
Rotate a jar of marbles, estimate the count and see how close you came.
For parents & teachers · Ages 5–12
Focus on estimation and invite the learner to explain a choice.
Play together Play a round together and ask how estimation helped solve the challenge.
Try away from the screen Ask the learner to draw or explain one strategy from Marble Jar Estimator.
Open activity on its ownHow to play
Rotate a jar of marbles, estimate the count and see how close you came.
Controls, progress and scores are handled inside the game.