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# Bubble Multiples

This is a mental maths activity to facilitate learning of multiples. It can be played by either one or two players, as chosen through the opening screen.

A target number is chosen, either through the opening screen or with the "Target" button. The object of the game is to tap on any bubbles that are multiples of the target number.

Points are gained for every bubble correctly hit, but points are lost for incorrect bubbles.

In order to ensure fairness in the two-player game, one bubble in three will be a multiple of the target.

Start

Starts and stops the game.

Multiple of: 2

Allows you to choose a new target number.

Time

Allows you to change the duration of the game, in seconds.

Speed: 1

Changes the number of bubbles and their speed, as well as affecting how quickly their speed increases during play: level 1 is the easiest, level 5 the hardest.

Range: 10x

Allows you to choose the range of numbers used in the bubbles: up to 10x the target number (to a maximum of 999), up to 20x the target (to a maximum of 999), or up to 999.

Allows you to choose the range of numbers used in the bubbles: up to 10x the target number (to a maximum of 999), up to 20x the target (to a maximum of 999), or up to 999.

X
Multiples of:
X
7
8
9
4
5
6
1
2
3
0
C
Time in seconds:
X
7
8
9
4
5
6
1
2
3
0
C