Two math skills we have been working on throughout the year are counting forward to 100 and counting back from 20. One way we have worked on both of these skills in the past several weeks is creating number line as a team. I pass out 10-12 index cards with numbers and tell students what the starting and ending number is. There task is to silently line up in counting order, which encourages carefully studying the written numerals and contemplating how they fall in order, as well as nonverbal communication skills. Once they are lined up they say their numbers out loud in order, counting either forward or backward depending on the segment.  The children who are not part of the number line decide if it looks and sounds correct. This has been a quick and fun way to incorporate some movement while also deepening understanding of some critical math concepts.