Any algebra teacher knows the value of his/her student memorizing the squares of the numbers 1-20. But, telling your students to do it simply doesn't get the job done...so, try the approach I took!
Start by having your students create mnemonic devices. The preview file I've included is the worksheet for the students, and the file you pay for is the "answers" if you will. It is the mnemonics that my students and I have come up with.
A fun way that my students memorized the squares was that we had Ã¯Â¿Â½classÃ¯Â¿Â½ time tests on them. I would say Ã¯Â¿Â½goÃ¯Â¿Â½ and the students would all write out the squares. I would time how long it takes. When done, the students stand. When the last person stands, I stop the timer. Then we add up the class total of how many are Ã¯Â¿Â½wrongÃ¯Â¿Â½ and I record the classÃ¯Â¿Â½s time and number wrong on the board. I also record the fastest person and put their name up. It got incredibly competitive between my classes, and the students LOVED it. This lasted for months. I loop with my kids, and it even continued into the next school year--that means it lasted all summer! I was shocked!
I have run into students 2 years after I had them memorize their squares and they still know themÃ¯Â¿Â½ I think they key was memorizing them in such a fun way! ALL of my students, even the ones who claim to be awful at math, had their squares memorized and enjoyed this challenge. In some ways, it was a reward if we had a few minutes left at the end of the class period, weÃ¯Â¿Â½d do another round of Ã¯Â¿Â½SquaresÃ¯Â¿Â½ and try to beat the current record. Give it a try!