Drag pictures of pets to put them in order by how many of each type are in the United States, and use the check button to get colorful feedback about how many are in the correct place!
Number Stories are real-world questions based on real-world contexts supported by factual sources. Both contexts and questions are written for, and by, a wide variety of individual users such as school students at any level, teachers, teacher-educators, home-schoolers, district supervisors, curriculum developers, and others who are simply interested in how mathematics can be used to solve problems or model situations in their lives.