Introduction to numbers for young minds



Mad 123 has two parts. The first one introduces the digits from 1 to 9. The second one shows how you can add and subtract things and also numbers. Click here to see Mad 123 in the iTunes store—where you can buy it for $1.99. 

 

 

The page at left is a kind of intermediate stage on the way to subtraction. Random numbers of blue and red birds appear as in the addition page. The total number of birds is displayed after the = sign. Even quite young children understand eventually that they need to count the red birds to see the dance of the birds. Not so young children can try the birdless page. In the subtraction page at right, a certain number of blue dogs—here, nine—appear one by one as numbers 1 to 9 replace each other before the – sign. Then the last three blue dogs turn red as numbers 1 to 3 replace each other after the sign. Similarly, children discover soon enough that they need to count the blue dogs to find the mystery number. The app includes two multiplication pages, with and without rabbits. They have to be very simple, as the result can’t exceed 9. There are two “a x ? = y” pages, but no division page. 



