Invite your child/ children to walk around a space, exploring different shapes and postures with their bodies. Consider using music to help their imagination. Encourage them to crawl, to reach high and low and to experiment with their movement. At any point, you can shout "freeze" at which point your child/children have to stop in their current pose. You then ask them to justify their pose and your child/children have to try to imagine a situation that makes their pose make sense. For example, if they are crawling on the floor they might say "i'm looking for something I dropped. " If they have an arm raised in the air they might say "i'm playing basketball, " or "i'm dusting a cobweb away. " One they have shared their justification, keep moving and have another go!