This large magnetic number line and individual student-sized, plastic number lines make a perfect way to introduce and practice number concepts. Students can follow the friendly frog as he hops and jumps from number to number and helps them add, subtract, skip count, and more. As you demonstrate examples on the whiteboard with the large magnetic number line, students can follow along at their desks with their own plastic number lines. The Activity Guides include interactive classroom activities and supporting reproducibles.