You like scratch-offs? I like scratch-offs. Everybody does. If we didn't, the lottery would've gone the way of fanny packs and Crystal Pepsi.
Know who else likes scratch-offs? Kids. This prime factorization activity combines skill with thrill. Your students will simply create their factor trees, then check their answers by scratching the boxes below each workspace to reveal the correct answer.
NOTE: This worksheet isn't a "My class is coming back in ten minutes and I need something for them to work on!" activity. (No judgment. We all do it.) This requires advance prep work. You'll need:
- Dish soap (Dawn, Palmolive, etc.)
- Acrylic paint (any color, the darker the better)
- Clear contact paper
STEP 1: Cut contact paper to fit the dimensions of the tiny boxes (eight total) beneath each factor tree work space. (Or cut two long strips that will cover the four boxes in each row, like I do.) Peel and stick over the answer boxes.
STEP 2: Mix two parts acrylic paint with one part dish soap.
STEP 3: Using a watercolor-sized paintbrush, carefully cover the answer boxes with your paint/soap mixture. Wait until each coat is completely dry (about 10 min) before applying the next coat. It usually takes 3-4 coats before you can't see the answers anymore.
STEP 4: Distribute during your next math class. Sit back. Relax. Enjoy the sounds of student engagement and minstrels writing songs about your pedagogical awesomeness.
You can also download Factor Tree Lottery WITHOUT Exponents
... it's free, too!