The 7th limb of yoga is Dyhana - Meditation. Meditation is a single-pointed focus. It is a practice that takes complete concentration. When we find that point in a comfortable seated position, we can find a peace with in our minds and our hearts. Meditation helps us cope with feelings that seem beyond our control - with anxiety, anger, sadness, shyness, fears. The longer we sit, the more in control we become of our minds and emotions.
But of course, meditation does not have to happen only when you're sitting! You can meditate while walking, running, or riding your bike. You can meditate while creating art - painting, drawing, coloring a mandala. So many ways!
Some great books to help kids with meditation:Teaching Meditation to Children: The Practical Guide to the Use and Benefits of Meditation Techniques by David Fontana
Under the Rose Apple Tree by Thich Nhat Hanh
Peaceful Piggy Meditation by Kerry Lee MacleanRelax Kids: The Wishing Star: 52 Magical Meditations for Children by Marneta Viegas