We were in the middle of a solving quadratic equations unit and had already covered simplifying radicals and solving with square roots. I introduced imaginary and complex numbers and wanted to spend some time practicing simplifying negative radicals. We started with a foldable about imaginary numbers with some practice problems inside.

We then moved on to practicing with a Solving Scramble activity. I gave the kids 16 problems that involved imaginary numbers, simplifying radicals and solving using square roots. They used white boards and worked with a partner to work each problem.

On the big white board in class I had all of the solutions in a scrambled mess. They checked themselves by looking for their answer. If it wasn't there, they went back to figure out what they did wrong. I really love these self checking activities because it gives them immediate feedback without all the questions to me of "Is this right?"