This activity is great for reviewing factoring and taking GCF of polynomials. Print out the first page and have students cut the blocks out, then match the polynomial to its corresponding factor. The second page is the answer key, which spells out "ALGEBRA ROCKS" so you can easily check students' answers.
You could have students complete this for a grade by simply having them write their work down as they factor each polynomial while building the puzzle. The answer key is attached as well.