Cubed Root: Find the prime factors of the number under the radical; look for groups of 3 of the same number, like 3 - 2's (cubed root of 8) to take out of the radical; if negative, can factor out the -1
Cute idea... good way to get them to learn square roots without them knowing it because they know the numbers under the post its! It is very inexpensive and not at all time consuming to make. The only problem I can think of with this would be the postit notes loosing their ability to stick onto the clock's face.
Math to the 7th Power: Inverse Operations GameInverse Operations Game This is a game I call Name that Operation. I use it to help the students build on prior knowledge of inverse operations and then use that to understand the connection between squares and square roots, cubes and cube roots and then later in the year, distributive property and factoring. Here are some slides I use in class to play the game:
Square Roots with Cheez-Its and a Graphic Organizer
The square root math trick is a great tool for anyone having to do numerous square root problems in school or work. Learn it on Curiosity.com and practice yourself: https://curiosity.com/paths/square-root-in-3-seconds-math-trick-tecmath/?utm_source=pinterest&utm_medium=social&utm_content=link&utm_campaign=2016q2xxpst03PTAYsquareroottrick
Standardized tests require students to work through problems at lightning speeds and square roots are some of the trickiest answers to find for a student just learning about them. This video gives hints and tips to make the process cut as many corners as necessary to find the correct answer.