This interactive Smartboard Lesson allows students to practice their facts either in a small group setting, partner setting, or independently. The snowman theme adds a fun and bright quality to the lesson. All slides are self checking with a click of the mouse. The lesson offers 15 problems that require students to use their critical thinking skills to figure out which numbers can be put together to equal the difference that is given to them. Created with Smart Notebook 11. Great for grades 1-5 depending on the level of the class. It's a great lesson to use for introducing subtraction or for those experienced students that need to review or just practice their speed.