Made 4 Math: Scratch Off Cards

Last week, inspired by someone's Scratch Off cards, I decided to try some of my own.  (Sorry, I scanned all of the posts listed, but couldn't find the source. Please let me know if this was inspired by YOU so that I can link to your blog.)  I had my student workers create an invitation for an upcoming Professional Development using the scratch off idea to make the announcement for PD a bit more interactive.  My student workers, high school juniors and seniors, got so excited about what they had created that they were literally showing everyone who would look.  By the time we put them in the teachers' boxes, we could hardly contain ourselves!

This week's #Made4Math project will hopefully capture the enthusiasm shared by the three workers and re-create it in the classroom.  I have created 4 sets of cards to review content covered over the past few days (exponents and radicals cards).  Each card has 4 questions (actually the same problem types they will see on an upcoming test).  The questions target the same focus skills but actual numbers vary slightly on each card.  I have outlined the 4 questions with a colored box to distinguish between card sets.  I will divide students into 4 groups by color: blue, green, red, yellow.  

The students will work each of the 4 questions in their notebook and compare answers within the group.  When the group settles on the correct answers, they will transfer all work to the question cards. They will then cover their work with clear packing tape and paint the tape with the scratch off solution: 2 parts paint and 1 part dish soap. We will let the paint dry and re-use the cards later to review again for the test.  This time students will trade cards with others from different color groups.  They will work each others' cards and then scratch to see if they are correct.  If answers are incorrect, students will be able to see each problem worked correctly and in detail so that they can discover what went wrong.  I know, I could review the 4 questions in a more traditional way, but I think the scratch off element (which takes all of 2 minutes to complete) will add a delightful twist :)

Use gray paint to cover cards quickly. Top with silver to add sparkle.