Simon Tatham's Portable Puzzle Collection is a collection of thirty-two puzzles and logic games. The games and puzzles can be played online or downloaded to run on your Windows or Mac OS X computer. Most of the games and puzzles are simple to play, but difficult to master.
Time for Time is a handy little website for anyone that teaches students how to tell time. The online games are easy for students to access. And if you don't have enough computers for all students to play the games at once, you can take advantage of the offline game suggestions in the teacher section of Time for Time.
Students play at home and at school against other students around the world in live games of mental arithmetic. Each game lasts for 60 seconds and students can play up to 500 games, earning points for each correct answer. The students who answer the most questions appear in the Hall of Fame. Students cannot select their level but will move up as they progress.
Cyberkidz is an educational platform for boys and girls in the age of 4 till 12 years. By playing the educational games, children will practice subjects they learn in elementary school (Preschool, Kindergarten, Grades 1-5).