Your students will ask you to use these cards over and over. I made these for my students when I was in the classroom, and they asked me to make more and more sets. Students will use their critical thinking skills to figure out what number is represented by each shape. Cards include addition and subtraction. They vary in difficulty as some of the cards work in a sequence and others will challenge them to look at all the number/shape sentences to figure out what the value of each shape is. A student worksheet is included for them to record their answers. An answer key is also provided so this activity can easily be used in small group setting or independently in a center or station or seat work. Fun and challenging. Students will find they need to use their problem solving skills to work these cards. Printable cards are in color but can be printed in black and white if color printer is not available. Card Set includes 14 printable cards in color. I recommend printing on card stock to use over and over. Look for Set 2 soon as I am working on it now.