William

William invites the students to get involved in ten activities which develop problem solving strategies, mental arithmetic, and logical thinking.
A level of difficulty ranging from 5 to 100 can be set. In the main menu one or more activities can be selected.
The activities to select from are:
• the magician conjures sums: find missing operation;
• the painter mixes numbers: correlate sums to numbers;
• the gardener picks apples: correlate number pairs;
• the grocer weighs packages: equate results of two operations;
• the photographer shoots pictures: correlate result with operations;
• the jailer frees prisoners: correlate operations with results;
• the professor presents interrelated sums: solve math puzzles;

The following options are available:
• sound on/off;
• select level of difficulty;
• the stone mason builds a wall: recognize math groupings;
• the plumber is thirsty: perform mixed operations;
• the urchin flies a kite: sequence results of operations.