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Math Playground is kidSAFE COPPA CERTIFIED. This means that Math Playground’s privacy practices satisfy the current COPPA compliancy rules for children’s websites. Math Playground earned this distinction after passing a rigorous examination of the entire website. Category and Tags An upbeat learning game that promotes learning appropriate 5th grade math skills such as addition, subtraction, multiplication, and division. This enjoyable math game rewards students by giving them Bingo Bugs as an added bonus!
It is a great game for people of all ages and can be enjoyed by both casual and hardcore gamers. With its simple yet challenging puzzles, Factory Balls is sure to provide hours of entertainment. Whether you’re a beginner or an experienced player, Factory Balls is sure to provide a fun and unique gaming experience. Mathsplayground So basically what they are trying to show is that these squares can overlap (well actually they weren't showing this, but regardless). If they didn't then that's when the number 16 with the 2x2 squares would come into play, but if you look for all the squares whether they overlap or not there is 204P.S the 7x7 squares completely overlap each other yet within the whole chessboard there is still space for 4 of them