Plant grass seed in cups with your child(ren).  Once the seeds are planted, place them near the window and watch them grow. Provide the items needed for growth and talk about what is needed.  Each day, allow children to observe and communicate any changes they see and write about it in a picture journal. 

Discuss changes children can identify after they have participated in a rigorous physical activity.  As you prepare to go outside, ask children to locate and place their hands over their hearts to feel the heartbeats in a rested state, notice the color in the faces, and think about how their legs and arms feel.