This Powerpoint will help your students to practice and master the skill of adding 10 more to a number, taking 10 away, adding 1 more and taking 1 away. Students pick a color and shade in the answer to problems on their 120 chart. 16 minutes later, they have a picture of a Christmas Tree! Directions are included in the first slide and an example of what their 120 chart should look like is at the end. I have done this with individuals, partners and groups. It's great for informal assessment and it's fun and engaging to all students! My kids beg for this game every week!
Don't forget to buy the mini 120 charts to go with this activity! (Labeled Mystery Picture Mini 120 Charts)
Another note: The background on the Powerpoint is green with red accents for Christmas. Not sure why the thumbnail is not showing the correct colors but when you download it, it will be red and green.