One of my favorite number activities is the 4 4s | 17GoldenFish
Four Fours Solutions
The Four 4s - Numberphile - YouTube
Friday Funny: The Four 4's | Winthrop Development Consultants Blog
Chris Haren on Twitter: ". @MattHazeltonNHS @JessicaCorum1 After only 2 days there's been some great progress on the Four 4s Challenge! https://t.co/hAmmHW6WFl" / Twitter
The Four Four Puzzle Solution - YouTube
The Four 4s Activity by Algebrainiac | TPT
Four Fours Math Challenge by Hello Learning | TPT
The Four 4s Activity by Algebrainiac | TPT
The Four-Fours Challenge by Cheryl Hughes | TPT
Four 4s | Spire Maths
Little useless-useful R functions – Mathematical puzzle of Four fours | TomazTsql
The Four Fours Puzzle: To Infinity and Beyond!
Kerry Thorne on Twitter: "Take the Four 4s Challenge! @Gateway6NKC Ss accepted and rocked the challenge. Can you? Create Equations using exactly four 4s to equal answers 1-20. #GoGrizzliesNKC @GatewayMarvels #StrongerTogether https://t.co/U6YrahHPfH" /
Arithmetic, hold the boredom: digit puzzles – Occupy Math