Four Straight Lines Make a square with 9 dots as shown. Cross all the dots with 4 straight lines without taking your pencil off the paper. Puzzle provided by Kordemsky: The Moscow Puzzles (Dover) Click HERE for solution! Fun Math Resources!Check these out daily for updated content! Categories: Brain Teaser of the Week, StudentBy Mrs. EberlyNovember 2, 2015Post navigationPreviousPrevious post:Nov 2 thru 6 ActivitiesNextNext post:Nov 2 thru Nov 6 Estimation of the WeekRelated postsNo titleAugust 20, 2019Family Math Night = PI!March 6, 2018No titleJune 14, 2017Count by 5’s Schoolhouse RockMay 23, 2017Counting by 2’sMay 19, 2017Coin Bubble GameApril 28, 2017