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Play How Many Marbles as a stand alone web app.

How Many Marbles: Quantity Guessing Game

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This is a modern take on a classic guessing game. Guess how many marbles are there in a jar. You can rotate the jar at any angle to count as many marbles as you can see. Use a little math and see how close you can get. It’s not as hard as it looks.

  • Count as many marbles as you can.
  • Use this knowledge to guess how many marbles are inside the jar.
  • Get as close as you can to the correct answer!

Overall

Design

Difficulty

Replay

Play How Many Marbles Game Online

Children and parents can play this number estimation game by clicking in the window below.

Alternatively kids and adults can play this container volume estimator video game for free as a web application here.

How Many Marbles Number Estimating Game for Kids Game Play Instructions

How to Play

Estimate the number of marbles there are in a jar.

  • Starting the Game
    • Select the green and white play button to load the welcome screen.
    • On the welcome screen, select the start button on the lower right corner to start the game.
    • The game will begin with a cutscene explaining the basics of the game.
  • Game Controls
    • Desktop
      • Left click and drag with your mouse to select, rotate, and navigate.
    • Touchscreen devices
      • Tap on the screen with your fingers and use them as a mouse.
  • Game Play
    • Interface
      • The bottle occupies the left and center of the screen.
      • The menu of the game occupies the right side of the screen.
        • Enter your guess in the counter provided on the center. Use the arrows to enter your guess.
        • The check button below the counter will lock in your guess. Each time you guess, the correct answer will show up below the counter to the left. The check button transforms into the next button.
        • At the bottom right of the screen is a series of dots representing the number of jars you can analyze.
    • The jar
      • Each level leads to a different jar with a different number of marbles inside.
      • You can rotate the jar in any direction. This will help you make more accurate guesses of the number of marbles inside the jar.
    • Improving your guesses
      • In the first levels, it’s all a matter of physically counting the marbles as you see them. As long as all the marbles are visible, this is a viable strategy.
      • After the marble pile goes up by 3 levels, it’s time to use math to solve your problem.
        • Tilt the container so you can see the bottom and count how many marbles appear across the bottom.
        • Following that, count the number of full levels of marbles there are.
        • Multiply the number of marbles in the bottom with the level of marbles in the jar below the top level.
        • Count the number of marbles in the topmost level if it is not full & add that to your prior number.
      • Make sure to separate the topmost level when making your guesses.
  • Target Audience
    • Students learning how to estimate numbers and volumes should like this game.
    • There are no adult themes in this game.

Alternate Methods to Estimate Item Quantities in Volumes

Our jar uses big marbles of equal size and you can rotate the jar to see them all. Actual estimating contests use an irregularly shaped object (jellybeans, usually). For these, you need a bit more math and other things like weight. Here are a few methods used to count them.

Like This Game? Review This Online Number Guessing Game for Young Girls & Boys

How Many Marbles: Quantity Guessing Game
3.8 / 5 Editor
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Overall4
Design4.1
Fun3.9
Originality3.6
Replayability3.2
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Free Online How Many Marbles Game for Children & Adults Screenshots

How Many Marbles Welcome Screen Screenshot.
How Many Marbles Instructions Screenshot.
How Many Marbles Game Instructions Screenshot.
How Many Marbles Game Screenshot.
How Many Marbles Results Screenshot.
How Many Marbles Game Complete Screenshot.

Mobile Friendly Cross Browser Support

This game is rendered in mobile-friendly HTML5, so it offers cross-device gameplay. You can play it on mobile devices like Apple iPhones, Google Android powered cell phones from manufactures like Samsung, tablets like the iPad or Kindle Fire, laptops, and Windows-powered desktop computers. All game files are stored locally in your web browser cache. This game works in Apple Safari, Google Chrome, Microsoft Edge, Mozilla Firefox, Opera and other modern web browsers.

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