A practice app for exploring the hundreds table.

With the educational game „The Number Hunt,“ number comprehension and addition (plus calculation) are practiced.

Note: The Number Hunt is currently only available as an iOS app. The earlier versions for Android, for the browser, and for download on Windows and Mac were based on Adobe Flash and have not been runnable since the end of the Flash Player (2021).

Description of the app

Place the corresponding number on the hundred chart by clicking on the appropriate number. The faster you calculate, the more points you get.

The game is over when you reach the circled target number.

You can change the target number yourself by shaking the device or tapping a number before starting the game.

Have fun playing!

Didactic notes

The educational game aims to develop strategies for fast addition—including crossing the ten—as a visual mental image by cleverly utilizing number relationships and the ten-structure of the hundred-grid. For example, the problem „+9“ can either be solved tediously by counting on, or the strategy „10-1“ can be chosen, i.e., one row down (+10) and one back (-1). The educational game seeks to help develop such number relationships and calculation strategies on a visual level and provide incentives for them. However, some children have difficulty developing such strategies and remain stuck at counting on. They need help and targeted incentives in initiating such effective strategies. This can be done by discussing or mutually presenting clever strategies, but above all through modeling and observation. It is helpful to support the strategies verbally and thus make them comprehensible (e.g., „+9, one row down is +10, then I have to go back one so that it is 9“ or „46 + 7, 4 to the 50, then 3 are left, so 53“).

Before children play this game, orientation exercises on the hundreds chart should have been carried out and basic number decompositions in the number range up to 10 should be largely automated.