The child-engineering of arithmetic in ToonTalk

Ken Kahn
2004 Proceeding of the 2004 conference on Interaction design and children building a community - IDC '04  
Providing a child-appropriate interface to an arithmetic package with arbitrarily large numbers and exact fractions is surprisingly challenging. We discuss solutions to problems ranging from how to present fractions such as 1/3 to how to deal with numbers with tens of thousands of digits to how to deal with irrational numbers. As with other objects in ToonTalk ® , we strive to make the enhanced numbers work in a concrete and playful manner.
doi:10.1145/1017833.1017860 dblp:conf/acmidc/Kahn04 fatcat:sgocaukrivasfk2zimmw5dxmam